Does anyone know this yaoi where the uke catches the seme having sex in the classroom and ...

Does anyone know this yaoi where the uke catches the seme having sex in the classroom and then later the days after they started hooking and uke has no idea the the seme has a twin (one has lots of piercing while the other doesn't) until one day he catch them arguing in their house while the uke was asleep after fwop and wakes up because they were loud