
From 6:00pm on September 10, 2026 (Thu), we will be holding a re-run of the "Worthy Foe SS-Rank quest: When The Rainbow Reverses".
The Worthy Foe SS-Rank quest "When The Rainbow Reverses" is high-difficulty content tailored for veteran Observers!
In the limited-time quest "When The Rainbow Reverses", players can earn "Parallel Quartz", an item used for training Heroes, as a first-time clear reward, and also claim Titles from the mission rewards.
*Titles can be claimed from "Missions" on the home screen upon completing the quest. Please be mindful not to forget to claim your rewards, as missions have an expiration period for claiming.
*The Titles available in this re-run are identical to those from previous events. If you have already obtained the Title during a past event, you will not be able to obtain a new one.
Even players who have already cleared "Worthy Foe SS-Rank quest: When The Rainbow Reverses" in the past can receive the first-time clear rewards again by completing it during this period.
The limited-time quest added in "Worthy Foe SS-Rank: When The Rainbow Reverses" costs 0 Stamina, allowing you to play at any time and as many times as you like during the period.
September 10, 2026 (Thu) at 6:00pm - October 1, 2026 (Thu) at 2:00pm (tentative)
Quest Period: Until October 1, 2026 (Thu) at 2:00pm
ミッション受け取り期間:~2026/10/08(木) 20:0014:00まで
【2026/09/10 追記】
ミッションの受取期限について、終了時刻の記載を修正いたしました。
In the limited-time quest added in "Worthy Foe SS-Rank: When The Rainbow Reverses", special effects that differ from regular quests will be active.
The special effects active in this campaign's quest 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. |
| VP Gain Rule Change | Cannot gain View Power after the character acts. *View Power can still be gained through skill effects. Instead, at the start of the turn, gain View Power equal to the total View stat of both enemies and allies. |
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, by inflicting debuffs on the enemy, 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.
Make good use of the debuff effects given to the enemy by reducing their Resistance Gauge to gain the upper hand!
In the limited-time quest added in "Worthy Foe SS-Rank: When The Rainbow Reverses", the following characters will be Bonus Characters. When added to a team, these eligible characters will receive bonuses based on each character's role.

■ Bonus Characters
| Character Type | Character Name | Bonus Details |
|---|---|---|
| Hero | "Bardic Wanderlust" Danzo | 50% more HP restored by own skills. |
| Hero | "Roaring Storm" Hydoor | ATK+50% |
| Hero | Barte | Buff duration and stacks from skills increase by 1 |
| Hero | Gnomon | +100% VP gained with own skills. |
| Sidekick | Barte | Base HP +1000, Base ATK +500, 250 less damage taken. |
| Sidekick | Gnomon | Base HP +1000, Base ATK +500, 250 less damage taken. |