[Event] "Echoes of Frontier Memories" Now Live!
[Last Updated] May 7, 2027. Added details regarding Epilogue Quests.
■ Regarding the issue where "フロンティアボス戦闘ディスク" cannot be obtained and the issue where the title "超銀河的" is not displayed as intended
*Posted May 7, 2026
We have confirmed an issue where "フロンティアボス戦闘ディスク", which should normally be obtainable as a reward upon the first clear of Event Main Quests, cannot be obtained.
Regarding this issue, we plan to distribute the relevant item to the Present Box of users who have cleared the final chapter of "Echoes of Frontier Memories" during the next maintenance.
Additionally, regarding the title "超銀河的" obtainable in this event, we have confirmed an issue where it is set as a title for the right side, although it was originally intended to be for the left side when combined.
Regarding this issue, we plan to implement a fix during the next maintenance.
*Players who have already set the aforementioned title on their profile card, please remove the title from your settings.
We sincerely apologize for any inconvenience caused to all players.
*Some translations on this page may differ slightly from the text found in the game.
*Some texts related to the UI and playable characters may also include content that is currently not supported for translation. We are working on these translations sequentially, so we ask for your patience.
Event Summary
Starting April 16, 2026 (Thu), the Limited-Time Event "Echoes of Frontier Memories" will go live!
In this event, you can collect event items through Free Quests and Management, and exchange them for training items and more.
■ Event Period (UTC+9)
April 16, 2026 (Thu) at 8:00 pm to May 14, 2026 (Thu) at 2:00 pm (Scheduled)
・Event Free Quests: Until May 7, 2026 (Thu) at 8:00 pm
・Event Main Quests: Until May 14, 2026 (Thu) at 2:00 pm
・Event Ticket Quests: Until May 7, 2026 (Thu) at 8:00 pm
Challenge Quests: April 23, 2026 (Thu), at 6:00pm to May 14, 2026 (Thu), at 2:00pm
Epilogue Quests: May 7, 2026 (Thu), at 6:00pm to May 14, 2026 (Thu), at 2:00pm
・Event Management: Until May 7, 2026 (Thu) at 8:00 pm
・Echoes of Frontier Memories Ether Search: Until May 14, 2026 (Thu) at 2:00 pm
・Limited-Time Missions: Until May 14, 2026 (Thu) at 2:00 pm
・Item Search BOX: Until May 14, 2026 (Thu) at 2:00 pm
Play Guide
1. Advance through the Event Main Quests released sequentially during the period!
During the event period, "Event Main Quests" featuring quest scenarios will be released sequentially.
Clearing these released quests will unlock Free Quests where you can obtain event items.
In this event, Free Quests will be unlocked upon clearing Episode 2 of the Event Main Quests.
2. Collect event items through Free Quests and Management!
Clear event-limited Free Quests and event-limited Management to collect event items.
3. Use collected event items to draw from the "Item Search BOX" filled with luxurious rewards!
The collected event items can be used to open the "Item Search BOX," which contains luxurious rewards such as Ether Tickets and character training items!
Details regarding the Item Search BOX will be introduced in the following section.
About Item Search BOX
In this event, you can use event items collected from Free Quests and other sources to open "Item Search BOX."
The Item Search Boxes are filled with many luxurious rewards, such as Ether Tickets and various training materials.
The Item Search BOX consists of multiple boxes, each containing different items.*1
By consuming event items to open a box, you will randomly obtain one item from the available contents. The remaining stock decreases with each draw.
Once you have obtained all the items in a box, the next box will be unlocked.
Through the Item Search Boxes, you can obtain a larger quantity of training items more efficiently than in previous events!
Collect many items and power up your favorite heroes!
*1: From the 11th box onwards, the contents of all Item Search Boxes will be identical.
Epilogue Quests
Starting from May 7 (Thu), at 6:00pm, the Epilogue Quests for the Limited-Time Event "Echoes of Frontier Memories" will be available for a limited time.
What are Epilogue Quests?
"Epilogue Quests" are quests that focus on specific characters.
To play an "Epilogue Quest," you must meet the specific requirements set for each quest.
【Note】
"Epilogue Quests" will only be available during the event period. After the availability period ends, "only cleared Epilogue Quests" can be viewed through "Past Events."
Epilogue Quests that were not cleared during the availability period cannot be played or viewed as new content through "Past Events," even if the quest requirements have been met.
Eligible Characters
- Huckle
- Andrew
- Reticul
Epilogue Quest Requirements
The following requirements are set for the Limited-Time Event "Echoes of Frontier Memories" Epilogue Quests.
- Clear the final episode of the "Echoes of Frontier Memories" Main Quest
- Possess either the Hero or Sidekick version of the character eligible for the Epilogue Quest*
*For characters with limited-edition Heroes or Sidekicks, the requirement is met by possessing at least one version, whether limited or regular.
【Example】
In the case of "Huckle's" Epilogue Quest, the requirement for character possession is met if you possess either "Boundless Voyage" Huckle (Hero), Huckle (Hero), or Huckle (Sidekick).
Challenge Quest
Challenge Quests are quests that you can attempt as many times as you like with 0 Stamina cost.
More quests will be added sequentially.
Challenge Quests can be selected from the Free Quest button on the Event Portal screen.
In Challenge Quests, special effects common across all Challenge Quests will be active.
The special effects active in this event are as follows:
| Special Effect | Effect Details |
|---|---|
| No Buff/Debuff stacking | Buffs and debuffs of the same type will not stack. (Applies to all allies and enemies) |
| Depleting the enemy's Resistance Gauge gives the enemy a debuff. | The enemy's Resistance Gauge decreases when taking damage. When the Resistance Gauge reaches 0, give the enemy +50% Damage Taken & SPD-30 for 1 action. |
By long-pressing "Battle Info (バトル情報)" displayed during battle, you can check the details of the active effects.
In Challenge Quests, you can obtain "Ether Crystals" and various Growth Items upon your first clear.
Rewards vary by quest.
Additionally, along with the addition of the Challenge Quests, new missions will be added to the Event Missions.
The missions to be added are as follows.
| Mission Details | Rewards |
|---|---|
| Clear 1 Challenge Quest | Ether Ticketsx1 |
| Clear 3 Challenge Quest | Stamina Drinkx1 |
| Clear 5 Challenge Quest | Ether Ticketsx1 |
Form teams with various combinations and aim to clear the quests!
Regarding the enemy's Resistance Gauge
In this event's Challenge Quests, enemies have a "Resistance Gauge".
The Resistance Gauge is a blue gauge displayed below each enemy's HP gauge.
The Resistance Gauge decreases when taking damage, and when the gauge reaches 0, give the enemy +50% Damage Taken & SPD-30 for 1 action.
Additionally, when the ally dealing damage is given SPD Up & the enemy taking damage is given SPD Down, the Resistance Gauge can be reduced even further.
A Resistance Gauge that has reached 0 will be fully restored at the start of the enemy's action.
*The maximum value of the enemy's Resistance Gauge varies depending on the quest and the enemy.
Make good use of the debuff effects given to the enemy by reducing their Resistance Gauge to gain the upper hand!
Bonus Characters for Challenge Quests
The following characters are eligible for bonuses in Challenge Quests. When these eligible characters are added to a team, they can receive unique bonuses based on their respective roles.
■ Bonus Characters
| Character Type | Character Name | Bonus Details |
|---|---|---|
| Hero | "Dyadic Dreams" Andrew: Hero | ATK+50% |
| Hero | "Boundless Voyage" Huckle: Hero | While alive, damage all allies deal increases by SPD difference with target x 2%. |
| Hero | Reticul | While alive, damage all allies deal increases by SPD difference with target x 2%. |
| Sidekick | Reticul | Base HP +1000, Base ATK +500, 250 less damage taken. |
Event Quests
Bonus Characters for Quest Battles
The following characters are eligible for bonuses in Event Free Quests. By including these characters in your team and winning battles, the drop amount of event items will increase.
■ Bonus Characters
・"Dyadic Dreams" Andrew: Hero
・"Boundless Voyage" Huckle: Hero
・Reticul: Hero & Sidekick
・Andrew: Hero & Sidekick
・Huckle: Hero & Sidekick
・"Majestic Gale" Gaius: Hero
・Vlaham: Hero & Sidekick
・Valoray: Hero & Sidekick
・Akashi: Hero & Sidekick
・Protagonist: Sidekick
・"Water Bullet" Akashi: Hero
・Mokdai: Hero & Sidekick
・"Holy Night" Mokdai: Hero
・Sui: Hero & Sidekick
・Ryekie: Hero & Sidekick
・"Drunken Tiger" Ryekie: Hero
・Crowne: Hero & Sidekick
・Digram: Hero & Sidekick
・"The Riptide" Andrew: Hero
・Shaft: Hero & Sidekick
・"The Runner" Shaft: Hero
・Orbiter: Hero & Sidekick
・Kiloc: Hero & Sidekick
・Joezen: Hero & Sidekick
・Narihito: Hero & Sidekick
・"The Comet" Narihito: Hero
・Kalaski: Hero & Sidekick
・"The Limelight" Kalaski: Hero
・Grigory: Hero & Sidekick
・Bygul: Hero & Sidekick
・Gaius: Sidekick
[Items with Increased Drop Rates and Eligible Characters]
| Target Items | Character Type | Rarity | Character Name | Bonus Amount |
|---|---|---|---|---|
| Investigation Reports | Hero | ★★★★★ | "Dyadic Dreams" Andrew: Hero | +40％ |
| Investigation Reports | Hero | ★★★★★ | "Boundless Voyage" Huckle: Hero | +40％ |
| Investigation Reports | Hero | ★★★★ | Reticul | +30％ |
| Investigation Reports | Hero | ★★★★★ | Andrew | +20％ |
| Investigation Reports | Hero | ★★★★ | Huckle | +10％ |
| Investigation Reports | Hero | ★★★★★ | "Majestic Gale" Gaius | +20％ |
| Investigation Reports | Hero | ★★★★★ | Vlaham | +20％ |
| Investigation Reports | Hero | ★★★★ | Valoray | +10％ |
| Investigation Reports | Hero | ★★★ | Akashi | +10％ |
| Investigation Reports | Hero | ★★★★★ | "Water Bullet" Akashi | +10％ |
| Investigation Reports | Hero | ★★★ | Mokdai | +10％ |
| Investigation Reports | Hero | ★★★★★ | "Holy Night" Mokdai | +10％ |
| Investigation Reports | Hero | ★★★ | Sui | +10％ |
| Investigation Reports | Hero | ★★★★ | Ryekie | +10％ |
| Investigation Reports | Hero | ★★★★★ | "Drunken Tiger" Ryekie | +10％ |
| Investigation Reports | Hero | ★★★★ | Crowne | +10％ |
| Investigation Reports | Hero | ★★★ | Digram | +10％ |
| Investigation Reports | Hero | ★★★★ | "The Riptide" Andrew | +10％ |
| Investigation Reports | Hero | ★★★★★ | Shaft | +10％ |
| Investigation Reports | Hero | ★★★★★ | "The Runner" Shaft | +10％ |
| Investigation Reports | Hero | ★★★★ | Orbiter | +10％ |
| Investigation Reports | Hero | ★★★★★ | Kiloc | +10％ |
| Investigation Reports | Hero | ★★★★ | Joezen | +10％ |
| Investigation Reports | Hero | ★★★ | Narihito | +10％ |
| Investigation Reports | Hero | ★★★★★ | "The Comet" Narihito | +10％ |
| Investigation Reports | Hero | ★★★★ | Kalaski | +10％ |
| Investigation Reports | Hero | ★★★★★ | "The Limelight" Kalaski | +10％ |
| Investigation Reports | Hero | ★★★★ | Grigory | +10％ |
| Investigation Reports | Hero | ★★★★ | Bygul | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Reticul | +30％ |
| Investigation Reports | Sidekick | ★★★★ | Huckle | +10％ |
| Investigation Reports | Sidekick | ★★★ | Andrew | +10％ |
| Investigation Reports | Sidekick | ★★★ | Vlaham | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Valoray | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Akashi | +10％ |
| Investigation Reports | Sidekick | ★★★ | Protagonist | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Mokdai | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Sui | +10％ |
| Investigation Reports | Sidekick | ★★★ | Ryekie | +10％ |
| Investigation Reports | Sidekick | ★★★ | Crowne | +10％ |
| Investigation Reports | Sidekick | ★★★ | Digram | +10％ |
| Investigation Reports | Sidekick | ★★★ | Shaft | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Orbiter | +10％ |
| Investigation Reports | Sidekick | ★★★ | Kiloc | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Joezen | +10％ |
| Investigation Reports | Sidekick | ★★★ | Narihito | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Kalaski | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Grigory | +10％ |
| Investigation Reports | Sidekick | ★★★★ | Bygul | +10％ |
| Investigation Reports | Sidekick | ★★★ | Gaius | +10％ |
Additionally, bonus characters can also be confirmed via the in-game event portal. (Characters featured in event-related Ether Searches will be displayed with a special frame.)
Please make use of this feature!
Event Sales
Bonus Characters for Event Sales
The following characters are eligible for bonuses in Event Sales. By sending these characters out on Sales, the bonus value for Event Sales will increase.
■ Bonus Characters
・"Dyadic Dreams" Andrew: Hero
・"Boundless Voyage" Huckle: Hero
・Reticu: Hero
[Event Sales Bonuses]
| Number of Bonus Characters Assigned to Sales | Event Sales Bonus Value |
|---|---|
| 1 character | +10％ |
| 2 characters | +30％ |
| 3 characters | +50％ |
About Sales Write-ups
In Event Sales, event-exclusive Sales Write-ups will appear at a random probability. Be sure to check them out!
Event Guest Characters in the Office
During the event period, the following Heroes will appear as Guest Characters in the Office.
- "Dyadic Dreams" Andrew: Hero
- "Boundless Voyage" Huckle: Hero
- Reticul
*To display Guest Characters, you must set "Show Guest Characters" to ON in the "Select Hero" settings within the Office.
キャラクターのスキン追加
■2026/05/07
エピローグクエストの公開にあわせて、以下のキャラクターにスキンが追加されました。
- 共生のアンドリュー（ヒーロー）：スキン2（ランク5以降のイラスト）
- 雄飛のハックル（ヒーロー）：スキン2（ランク5以降のイラスト）
"Limited Pack" Now Available
In conjunction with the release of the Limited-Time Event "Echoes of Frontier Memories," the "Limited Pack" is now available for purchase.
The "Limited Pack" is a value pack available for a limited time, featuring a set of "Ether Stones and Ether Tickets."
For more details, please click here!
Echoes of Frontier Memories Ether Search
In conjunction with the Limited-Time Event "Echoes of Frontier Memories," we will be holding an Ether Search featuring characters that appear during the event.
■ Event Period (UTC+9)
・April 16, 2026 (Thu) at 8:00 pm to May 14, 2026 (Thu) at 2:00 pm (Scheduled)
*Notes:
The Point Contracts associated with the "Echoes of Frontier Memories Ether Search" will close at the same time the Ether Search ends. Please ensure you complete your exchanges well in advance, as attempts made near the closing time may fail.
Featured Characters
- New! Hero: "Boundless Voyage" Huckle ★5（Shadow Affinity）(Limited)
- New! Hero: "Dyadic Dreams" Andrew ★5（Water Affinity）(Limited)
- New! Hero: Reticul ★4（Water Affinity）
- New! Sidekiks: Reticul ★4
*Please note that limited-time Hero and Sidekick cards will not be added to the standard Ether Search after this Ether Search ends.
New Character Introduction
- "Boundless Voyage" Huckle (★5 Hero) (Shadow Affinity) (Limited)
Illustrator: 朱交赤成
CV: 堀内賢雄
Hero
- Affinity：Shadow
- Role：Speedster
| Skill Name | VP Cost | Effects |
|---|---|---|
| Wanderer's Flight | 0 | Deal 60% damage to 1 enemy. Heal the most injured ally for 25% of Base ATK. Gain +1 charge for Skill 3*1. [Passive] When an ally other than self deals damage with an active skill to an enemy that has not yet acted, chain-attack with Skill 1. If damage is dealt to multiple enemies at once, chain-attack the enemy with the lowest SPD among the targets. Chain-attacks from this effect do not grant VP or Combo, and can trigger up to 3 times per turn across all allies. |
| Trailblazer | 5000 | Gain 3000 VP. If own SPD is higher than the target's SPD, increase VP gained based on the SPD difference (up to a maximum of 15,000 VP; reaches maximum at 50 SPD difference). Give SPD Down for 1 action to 1 enemy. Give 1 stack of Scar. [Passive] At the start of battle, gain +2 Flight Gauge (max 5). When an ally gives SPD Down to an enemy or gives SPD Up to an ally with an active skill, gain +1 Flight Gauge (Flight Gauge can increase by up to 1 per skill activation). When Flight Gauge is 3 or higher and any ally is exposed, consume 3 Flight Gauge from all allies to activate "Starlight Passage"*2. When Flight Gauge is at maximum and would increase further, give self ATK +20% for 2 turns (stacks up to 3 times). |
| Over the Horizon | 11000 | Heal all allies for 60% of Base ATK. Give SPD Up for 1 action. If the target already has SPD Up and it is removed due to buff overlap prevention, increase the SPD Up count by 1. [Passive] While alive, allies deal increased damage based on the SPD difference with enemies (+1% damage per 1 SPD difference, up to a maximum at 50 SPD difference). This effect does not stack. |
*1 Skill 3 Charge [Other/Non-stackable/Charge]
-500 VP Cost for Skill 3 per Charge (Max 10 Charges).
Effect is removed upon using Skill 3.
*2 Starlight Passage [VP Cost: 0]
Deal 60% damage to all enemies.
Heal all allies for 20% of Base ATK.
If the target is exposed, heal amount increases to 50% of Base ATK instead.
Character PV (Audio plays during playback)
- "Dyadic Dreams" Andrew (★5 Hero) (Water Affinity) (Limited)
Illustrator: GomTang
CV: 後藤ヒロキ
Hero
- Affinity：Water
- Role：Attack
| Skill Name | VP Cost | Effects |
|---|---|---|
| Rapid Shot | 0 | Deal 60% damage to 1 enemy. Gain SPD Up for 1 action. [Passive] When an ally gains SPD Up, if it is removed due to buff overlap prevention, grant that ally +10 SPD for 1 action (stacks up to 3 times, max +30). This effect does not stack. |
| Suppressive Volley | 4000 | Deal 90% damage to 1 enemy. Give Dazed for 1 turn. Deal 60% damage to enemies adjacent to the target. [Passive] Gain +10% ATK for each Speedster ally. |
| I'm Still Here | 10000 | Gain 3 stacks of Summon: Gemini*1 and summon Gemini. If this skill is activated during own action, perform an additional action (once per turn). During the additional action, Sidekick Skills cannot be used. If Gemini is summoned, this skill becomes Full Weapons Barrage*2. [Passive] On entrance, gain 1 stack of Summon: Gemini and summon Gemini. |
*1 Summon: Gemini [Other/Non-stackable]
While this status effect is active, summon Gemini.
Gemini activates a skill when acting, dealing 60% Water damage twice to random enemies.
After activating the skill, if Gemini has 50 or more SPD, reduce SPD by 50 and act again. If SPD is below 50, reduce remaining duration.
When an ally ends their action, Gemini gains SPD equal to that ally's SPD just before the end of their action minus 100 (this value cannot be below 0).
If the ally is a Speedster, the SPD gained is increased by 50%.
SPD can be gained from each ally up to 3 times per turn; the 2nd and 3rd gains are reduced to 50% and 25% of the original value, respectively.
Gemini's ATK is based on the summoner's ATK, further increased by 2.5% of the summoner's total SPD changes.
Only 1 Gemini can exist on the field.
*2 Full Weapons Barrage [VP Cost: 8000]
Deal 180% damage to 1 enemy.
Give SPD Down for 2 actions.
Remove 2 buffs.
Character PV (Audio plays during playback)
- Reticul (★4 Hero) (Water Affinity)
Illustrator: wasp
CV: 浦和希
Hero
- Affinity：Water
- Role：Speedster
| Skill Name | VP Cost | Effects |
|---|---|---|
| Ping Test | 0 | Deal 50% damage to 1 enemy. 70% chance to give 1 stack of DEF Down. [Passive] While alive, allies are more likely to target the enemy with the lowest SPD among valid targets when auto-attacking or using random attacks that hit all enemies. If allies are affected by effects that change target priority, those effects take precedence. |
| Traffic Shaping | 4000 | Give Acceleration Signal*1 to a single ally (if the ally already has Acceleration Signal, remove it). The effects of Acceleration Signal are enhanced based on the team's average SPD. Give SPD Up for 1 action. If the team's average SPD is 125 or higher when this skill is activated, perform an additional action (once per turn; cannot gain VP or Combo during the additional action). [Passive] When an ally gains SPD Up with an active skill, reduce the duration of 1 debuff on that ally by 1 turn. If the target has no debuffs, reduce the duration of 1 debuff on a random ally by 1 turn (this effect does not stack). |
| Loud and Clear | 7000 | Give Deceleration Signal*2 to 1 enemy (if the enemy already has Deceleration Signal, remove it). Give ATK Down for 1 action. The effects of Deceleration Signal are enhanced based on the team's average SPD. |
*1 Acceleration Signal [Other/Non-stackable]
Based on the average SPD of all allies upon being gained, this status will be upgraded to Acceleration Signal+ or Acceleration Signal++.
This status is removed at the start of the next turn after being gained, activating the following effects:
Apply SPD Up for 1 action to allies with Acceleration Signal.
[Added for Acceleration Signal+]
Gain an additional 3000 VP.
[Added for Acceleration Signal++]
Gain another additional 3000 VP.
If the Hero who applied this effect is knocked out, this status will be removed.
*2 Deceleration Signal [Other/Non-stackable]
Based on the average SPD of all allies upon being gained, this status will be upgraded to Deceleration Signal+ or Deceleration Signal++.
This status is removed at the start of the next turn after being gained, activating the following effects:
Apply Massive SPD Down for 1 action to enemies with Deceleration Signal.
[Added for Deceleration Signal+]
Remove 1 debuff from all allies.
[Added for Deceleration Signal++]
Give Lock-On for 1 turn to enemies with Deceleration Signal.
If the Hero who applied this effect is knocked out, this status will be removed.
Sidekick
| Type | Skill Name | VP Cost | Effects |
|---|---|---|---|
| Sidekick Skill | Handshake | 5000 | Grant a single ally SPD Up for 2 actions and reduce VP cost by 1000. If the target has already acted, reduce VP cost by 2000 instead. |
| Equipable Skills | Researcher's Examination Ⅰ | 0 | ATK +5%. When an ally inflicts SPD Down or Super SPD Down with an active skill, gain ATK +10% for 1 action (this effect does not stack). [During Auto Battle] Skills that target enemies will target the enemy with the highest SPD. |
Character PV (Audio plays during playback)
Event Trailer
"Boundless Voyage" Huckle (Audio will play during playback)
"Dyadic Dreams" Andrew (Audio will play during playback)
Reticul (Audio will play during playback)
Maintenance Announcement
To prepare for the Limited-Time Event "Echoes of Frontier Memories," maintenance will be performed during the following period.
■ Maintenance Schedule(UTC+9)
April 16, 2026 (Thu) at 2:00 pm to 8:00 pm (Scheduled)
Attention: In order to accompany the new event, we will performing maintenance at the above time. Before maintenance start, Please complete your quest or battle to avoid application error after maintenance is over.