Case File #iroi
S TierIroi Build Guide
Iroi is an Anima Support who keeps the team alive with healing, revivals, and teamwide support. She fits teams with aggressive Main DPS units that stay on-field, using ATK% and Cycle Intensity to increase her healing, buffing, and Ultimate uptime. With Speedy Hedgehog, she also provides a teamwide ATK buff after her Ultimate.
Strengths
- Strong teamwide healing, revival, and survivability support.
- Buffs allies and enables smoother rotations for on-field Main DPS characters.
- Scales with ATK%, so her healing and support effects improve with offensive stats.
- Speedy Hedgehog gives an additional teamwide ATK buff after her Ultimate.
- Works well in Charge and Blossom teams.
Weaknesses
- Her value is mostly defensive/support, so she contributes less personal damage by default.
- Wants high ATK% and Cycle Intensity to maximize healing and Ultimate uptime.
- Her best performance depends on having her Ultimate available consistently.
- The Wrong Gate is her limited signature Arc, though Youthful Fantasy and Clear Skies are alternatives.
- Not a dedicated Main DPS; building her for damage may reduce team support consistency.
Best Arcs
Increases ATK by 16%. When the wearer performs healing, increases the wearer's Anima DMG by 30% and all allies' DMG by 15% for 20s. Resets duration when triggered again.
Increases Break Intensity by 60. Seals Black Tome with two chains; unleashes 1 chain when a team member casts a Support Skill. When available, Black Tome summons for 20s, designates an enemy every 5s, increases wearer's Chaos DMG to designated enemies by 20%, and deals Chaos DMG equal to 2% of wearer's ATK when designated enemies take Break Damage.
Increases Anima DMG dealt by the wearer's Redirect Skill and Ultimate by 20%.
Best Cartridge
Epic (2): Charge Efficiency +12%. Legendary (4): After the wearer casts Ultimate, increases all allies' ATK by 15% for 20s. Effect does not stack.
Best Main Stat: ATK%
- ATK% is best because Iroi's healing and support scale with ATK.
- Substats should focus on ATK% and ATK first, then Cycle Intensity.
- CRIT Rate and CRIT DMG are bonus stats if you want extra personal damage.
Module Layout
Required Modules
Bonus: Type III (+10% ATK)
Total Bonus: +60% ATK
Substat Priority
- Best layout when using Speedy Hedgehog, activating its 4-piece effect while maximizing Type III bonuses.
- Prioritize ATK% and ATK first, then Cycle Intensity for more frequent Ultimates.
- CRIT Rate and CRIT DMG are extra offensive stats if Iroi contributes damage.
Best Teams
A Charge-focused team with Shinku as the Main DPS. Iroi keeps the team healthy while Shinku builds Defiant Spirit and enters Surging Crimson more safely. Hathor quickly applies Remora, while Zero enables Esper Cycles.
Shinku
Main DPS
Primary on-field damage dealer; wants Charge triggers to enter her enhanced state faster.
Hathor
Sub-DPS
Preferred Sub-DPS for quickly triggering Remora while dealing strong personal damage.
Zero
Sub-DPS
Cycle enabler who helps keep Esper Cycles active.
Iroi
Support
Provides healing and offensive support; Speedy Hedgehog adds a teamwide ATK buff after her Ultimate.
Alternatives
Set up Blossom with Iroi and Zero's Redirect Skills to create Vita Pistils.
Swap Hathor in to apply Remora, then swap Shinku in to trigger Charge.
Build Defiant Spirit with Shinku and enter Surging Crimson.
Use Iroi's healing and buffs to let Shinku stay on-field safely and continue her damage rotation.
Repeat the rotation when Shinku's empowered state expires.
- Shinku benefits greatly from Iroi because she wants extended field time.
- Iroi's healing makes this team much safer during longer fights.
- Speedy Hedgehog gives the team extra ATK after Iroi's Ultimate.
A Blossom-focused team with Nanally as the Main DPS. Iroi sustains the team while Nanally deals AoE damage through Vita Pistils. Jiuyuan adds damage, Anima pressure, and grouping, while Zero helps initiate Esper Cycles and supports Blossom.
Nanally
Main DPS
Main damage dealer using Vita Pistils and AoE damage for the team.
Jiuyuan
Sub-DPS
Crucial teammate providing damage, Anima pressure, and crowd control through grouping.
Zero
Sub-DPS
Cycle enabler and cornerstone of the Blossom reaction.
Iroi
Support
Keeps the team healthy and maintains a safer rotation during longer encounters.
Alternatives
Use Iroi and Zero to help set up Blossom and generate Vita Pistils.
Group enemies with Jiuyuan so Nanally can hit multiple targets with AoE damage.
Maintain Iroi's healing and buffs while Nanally deals the bulk of the damage.
Use Zero to help initiate Esper Cycles and keep the Blossom reaction active.
Cycle back to Iroi when healing or buffs are needed, then return to Nanally.
- Focuses more on reaction damage and smoother team cycling.
- Jiuyuan's grouping makes it easier for Nanally to hit multiple enemies.
- Iroi provides safety so the team can maintain its damage rotation.
Skill Priority
Collaboration
Basic Attack chain builds Imagination and enables charged Daydream attacks. Less central because Iroi is usually a Support, so level it later.
Bang!
Support Skill that deals Anima DMG, heals allies, and builds Imagination when Iroi swaps in. Valuable for her support loop after her Ultimate and Skill.
3.8-Billion-Year Mirage
Iroi's Ultimate is her main sustain tool: continuous healing, possible Anima DMG with enough Imagination, and revival for allies in Regression. Prioritize it first.
Future Self Continuity
Provides teamwide healing, ATK buff, enemy grouping, and Imagination buildup in one Skill. Level it early to stabilize the team and set up her Ultimate.
Awakening Priority
Trait: Transparent
Best general Awakening: adds another support effect to Sympathetic Nerves, increasing allies' ATK based on Iroi's Base ATK for 20s. Fits her ATK% build.
Iterated Prisoner's Dilemma
Helps Iroi build Imagination even while off-field and increases Imagination gain efficiency, making her smoother in swap-heavy teams.
Strategy: Tit for Tat
Gives Iroi added off-field damage when a team member casts their Skill, valuable with DPS units that rely on Skill rotations.
Trait: Cooperative
Improves healing toward allies below 50% HP. A comfort option for extended fights if the team needs extra survivability.
Trait: Retaliatory
Increases the ATK Ratio of Iroi's lambs while allies are in Regression. Situational, but useful for teams that actively use Regression.
Trait: Forgiving
Improves revive utility by giving revived characters HP, Cycle Energy, and Ultimate Energy after 3.8-Billion-Year Mirage. Useful in clutch situations but less consistent.
How to Play
Iroi is a sustain Support who heals, revives, buffs allies, and helps enable smoother rotations. Use her Skill to heal, group enemies, and build Imagination, then use her Ultimate to provide teamwide healing and support before swapping back to the Main DPS.
Rotations
- 1Iroi Skill → Swap to Zero to help set up Blossom → Swap to Hathor to apply Remora → Swap to Shinku to trigger Charge → Build Defiant Spirit → Enter Surging Crimson → Continue Shinku's damage rotation → Repeat
Tips
- Start with Future Self Continuity to heal, group enemies, and build Imagination.
- Use Basic Attacks, Redirect, or Support Skill briefly to gain more Imagination before Ultimate.
- Use 3.8-Billion-Year Mirage as soon as it is available, especially before swapping to your Main DPS.
- With enough Imagination, her Ultimate deploys a zone that deals damage over time to enemies.
- Hold Basic Attack for Daydream, then follow with Lucid Dream for extra Anima damage when you want Iroi to contribute.
- Swap back to the Main DPS after Iroi's healing and buffs are active.
- Return to Iroi when the team needs healing or buffing, then repeat the rotation.