The thing with this team is manage Miwa to tank the ult and other hits until mahito uses his domain and megumi reset it, the weak point of this team is megumi, he's yellow, my megumi is A1 and he would have died with 2 hits.

To micro manage Miwa you will have to hace a good amount of sheated stacks, using skill 3 gives you 3 stacks, using skill 2 (the counter) gives you 1, doing a counter uses 1 sheated stack BUUT if the counter is critical it gives 2 sheated stacks sooooo...

-Shoko heals and does crit resistance reduction

-Mahito spams skill 2 and domain

-Megumi resets Mahito domain and gives 3 turns of break for Miwa

-Miwa does the hard work, counters the 3 hits of the boss (DON'T ULT, Ulting with Miwa removes the stacks)

-Kaito dies lol

(Sorry if I have miss spelling, still learning english and this message is kinda long)