Astei is a formidable support boss who heals allies, boosts attack, and resurrects her team upon enraging. Her companion Sterope punishes non-offensive skills by recovering the boss team's resources.
This guide also applies to stage S2 Hard 5-9.
Difficulty
Astei

Lv. 100Lv. 100 — Story Hard · An Unpleasant Reunion
Skills

The Stars in Heaven
Single TargetAttacks an enemy and activates a Dual Attack from the ally with the highest Attack.

The Flowers on Earth
CD 3All EnemiesHeals all allies by 15% and reduces ultimate skill cooldowns by 1 turn(s). Additionally, recovers the caster's Weakness Gauge by 30%.

The Love in Our Hearts
CD 4All EnemiesHeals all allies by 25% and inflicts reduced Critical Hit Chance on all enemies for 3 turn(s).

Just a Little More Light
(Passive Effect) Increases the Attack of all allies except the caster by 15% every turn. Sterope has the following abilities: When hit, deals 1200 fixed damage to all enemies, and increases the Priority of all allies by 10%. When an enemy uses a non-attack skill, recovers all allies' Weakness Gauge by 4 and Health by 3%.

Enraged
All EnemiesBecomes Enraged when Health drops to 40% of Max Health or lower. Enraged Ultimate: Gains an irremovable effect that increases Attack and reduces damage taken for 3 turns, and Resurrects (Greater) all slain allies. Inflicts Silenced on all enemies for 3 turn(s), ignoring the target's Resilience. Does not receive Weakness Gauge damage after becoming Enraged.
Sterope
Add
Lv. 100Lv. 100 — Story Hard · An Unpleasant Reunion
Skills

Shatter!
Single TargetAttacks an enemy. If Sterope had a buff before attacking, activates an additional attack on the same target and grants Divine Retribution. Divine Retribution: Increases damage dealt by all allies by 4%. (Max 15 stacks)

Begin the Crusade
(Passive Effect) At the start of battle, inflicts Keraunos on allies and enemies for 3 turn(s).

Fight Ferociously!
CD 4Single AllyGrants increased Accuracy and Effectiveness to all allies for 2 turn(s).

Blind Faith
(Passive Effect) When hit, deals 500 fixed damage to all enemies. When an enemy uses a non-attack skill, recovers Weakness Gauge of all allies by 4 and Health by 3%.
Tips and teams below are written for Story Hard.
Tactical Tips
- The boss has no immunities, so bring .
- Try to avoid using characters with non-offensive skills.
Recommended Characters
Demiurge Vlada, Sterope, Eternal
For .




