4:48 Subtitles English -

Bring IDs with Slash damage, and avoid/minimize Pierce damage dealers.

During the Dueling phase, use a defensive skill to block her attacks and only allow one character to attack her to trigger a stagger. Recommended Teams/Units

A debuff that makes your Sinners target their own allies. 4:48 subtitles English

Utilize AoE E.G.O. skills to target the trees and the boss simultaneously.

Use defensive skills to offset her high-damage skills when you cannot win the clash. If you're still stuck, let me know: Which identities (characters/IDs) are you currently using? Are you losing to the high damage or the bloom effect ? I can give you a more customized team setup! Bring IDs with Slash damage, and avoid/minimize Pierce

On Turn 8, she uses a massive Area of Effect (AoE) attack that can wipe the team, which scales based on how many trees are left. Strategies for Success

Focus on winning clashes, especially during the first 3 rounds, to manage Sanity and prevent Blooming. Utilize AoE E

Reduce Dongbaek’s sanity to negative levels to cause a "Panic" state, which staggers her.