2.2
5*
Seed
Orphie

2.3
5*
Zhao
Ye Shunguang
4*
Sweety
Zhao and Sweety are the same faction.

2.4
5*
Chinatsu
Manato (Free)

Not sure which ones are first and second.

>Battle Tower Miasma Priest no damage with the buff that drains your hp down to 10% as the BGM vocals scream at you
Fucking KINO