Ksai is a Fire Ranger boss that heavily favors Water units. Non-Water units suffer Attack and Defense penalties, while the entire team receives Debuff Enhancement. The DoT cap makes Curse and fixed damage strategies less effective, limiting damage to 5k per tick. This boss can be cleared in a single run with proper Water-focused team composition.

Ksai
Fire
RangerLv.100Immunities

Command: Restrain
Attacks all enemies, and recovers Health of the caster by 40%.

Command: Incapacitate
(Triggered Effect)
After using Command: Restrain, when the caster's Health is 70% or higher, activates an additional attack on all enemies. After attacking, grants increased Defense to the caster for 4 turn(s). This effect cannot be removed.

Command: Destroy
Attacks all enemies, and inflicts reduced Attack on the target for 2 turn(s). This attack ignores the target's Immunity and Resilience, and cannot be removed.
After attacking, grants an extra turn.

Terminal: Protect Weakness
(Passive Effect)
Always grants Buff Enhancement. This effect cannot be removed.
Always inflicts Debuff Enhancement on all enemies. This effect cannot be removed.
If Health is greater than 70%, does not take Weakness Gauge damage.
Damage from Cursed/fixed damage does not exceed 5000.
Reduces Attack/Defense of non-
Water enemies.

Enraged
Becomes Enraged when Health drops to 60% of Max Health or lower.
Enraged: Grants an irremovable effect to the caster that increases Attack and reduces damage taken for 3 turns. Enraged lasts for 3 turns.
Command: Terraform: Used when Enraged ends.
Deals lethal damage to all enemies.
If enraged within 1 turn, recovers 100 Chain Points.
Tactical Tips
- •Non-
Water units suffer and penalties. - •Team receives , boss has .
- •Boss is immune to until HP drops below 70%.
Recommended Characters
Water support unit with .
Caren, Beth, Roxie, Poolside Trickster Regina, Laplace
Water DPS options.
Great
Water support unit with and .
Fortuna, Edelweiss, Demiurge Vlada, Sterope
options.















