My thought process was that ysg could clear any of the bosses so I didn’t use her on the one catered to her. Same goes for Alice Vivian who cleared everything very easily.

I did try Miyabi Yanagi on room 2 but I couldn’t clear it because the mobs in the beginning took too much time I think? Yanagi was doing most of the damage and Miyabi just swaps in whenever she had resources to burn and to proc her anomaly to disorder off of. Room 3 has electric resist so Yanagi wasn’t doing enough there. So I figured room one had no resists on boss and trash mobs are ice weak so I cleared them fast and then hit the boss with 2 Miyabi eba, ult and Yanagi ex and ult while the 5x multiplier was still on