>what is happening here
From the looks of it, [a/spoiler]busing the starting team size.


https://youtu.be/scNycrLShgM?si=9AYGiLIwf3wDqRkv&t=360

Supports that work for cutting your starting team size are

>friends
>rice
>haru (guts ssr)
>taiki
>Matikanefukukitaru (has a good wit SR)

If you would pick rice, haru, Matikanefukukitaru, and two friend cards that would leave you with two buddies, kitasan and a secondary speed SSR for instance. That would cut your starting team from 10 to 5.

Even weirder - Aoi + Tazuna+ Riko + Rice + haru + kitasan would equal FIVE starters.

I'm gonna try this and see how it goes.