that you can join and get fat or that a group of chubby girls influence you
Hmm. I have been on here for a while and have never seen anything like that. Or maby my memory is just bad lol. Good luck!
There was a cooking club in Kate’s Uni Days, if I’m remembering that correctly. That said, it was a very, very minor footnote in the game, with the MC signing up for it, and a general 5 pound gain for the cast resulting. You didn’t actually do any events with them.
One of the character arcs in Growth Academy involves a cooking club, but it is not stuffing related. It is fairly frequent, but GA is a slow burn dating sim so the growth happens over a long period of time. It is very well written though and I would argue it is worth a look.