For the death of me can't recall the name of a yaoi oneshot I read a while back

It's about three (might be two) school guys, one was in soccer, the other from base/softball

They basically spend their afternoon (after training) in a shed inflicting serious wounds on each other (and getting it on) - the soccer guy using his shoes (cleats), etc

I also recall that there is no definite uke and they can switch things up. Seems more like a seme/seme sort

Sorry for being vague, it's been a while 😢

Sorry not an answer but following.
There's a self harm tag on mangago, maybe that'll help