This phase introduces the bullet-hell elements Cave Adventure is known for. Focus entirely on your feet. Koishi’s hitbox is large during this phase, so use area-of-effect (AoE) spells if you have them. Watch for the purple glow on the floor; this indicates where the Embers of Love will spawn. Phase 3: The Subconscious Awakening (40% - 0% HP)

Koishi Komeiji's Defeat: A Complete Guide to the Cave Adventure v1.0.4 Boss Encounter

Use mid-range projectiles or spears. Avoid heavy broadswords as they leave you too vulnerable during swing animations.