Does the Ritsu squad exists solely to be villains?
I don't recall a single thing about any of them, they felt incredibly forgettable around those 5-6 chapters and then they're suddenly overpowered (okay not suddenly but i really dislike power based on monologue and that's what they had, previous experience that weren't explicitely shown)
I hope the next challenges stay away from this whole villain thing, author should make all character "interesting" in a way that you can root for any of them that you felt a better connection or else they'll end up being 1D and you're just gonna hate/love through sheer common sense