I tried Solar (but not super top tier Solar with all girls lvl110 max everything and 5 rainbow FM fully unlocked) and they can't kill the first ennemy. They deals someting like 75% of pests HP.
I have Dendrobium lvl110, max super ampules, max 2nd affection with a blue team buit for her (Cactus+Valentine Onci+Swimsuit Maple+Spade-chan) with Crit and 4 +10% blue skill damages FM and the Mechanical Castle FM (+5% ATK for each girl alive at the start) on her. I don't kill anything and then, they die.I could maybe eke out a win if I used some rainbow coins and memory crystals on centies and high ampies to power up Dendrobium...
Not sure Dendrobium can skip this. Actually, even my Kerria Team has a hard time on the boss. And it's my most defensive team. Even Cardamine can die in one turn without guts.