Where are you reading the raws? Also, is it like the storyline of the anime? Because right now the side couple is the cat girl with the boy that likes Mari, but I don't know if that's anine only or if it's in the manga too.
From what I remember they haven't interacted much in the manga? I could be wrong tho ┑(￣Д ￣)┍
Raws link: https://m.manhuagui.com/comic/40438/
It's mainly is the cat girl and boy at the moment but in the newest raw it seems like a new side couple will happen~
I'm crying the raws are so far ahead