Need help finding this hentai/doujin

So I'm not sure if I can ask here or not but I've found a similar post from 7 years ago posted that wasn't taken down and actually had responses, so I'm shooting my shot. It's just been bothering me a lot because no matter how much I try I can't find it. The plot is there's this guy joining a school club but their club is all about having sex and the scoring was based on sex positions and how long they held out? I think? I have a vague memory of it but that's basically the premise of it. Does anyone have any idea about this?