Literally a Meme Stage right there, lol

Tips : Let Naille Kill your 8 Units (i think?) and she'll become Careless by her Arrogance so that A.Seo Yoon will never appear on Stage.
Because you don't want to fight A.Seo Yoon. It's too tanky and so much damage on her.
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Here's my Team in order & Gears :

Lee Yumi (HuMaGorGor HP Set)
Eins & Zwei (HP Set)
Xiao Lin (ATK Set w/ Crit Dmg & Exclusive Gear ASPD)
Dash (CDR Set)
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BGM : Furious! Destroy! Mishneider!