help me find this yaoi manga!

i remember this specific story, like some yaois it’s just a few chapters (or maybe just one?) that is placed after the main story which makes it tricky to find T_T setting is in high school, uke is a blonde lone wolf who always skips class and seme is his diligent classmate (dark short hair if i remember correctly…), initially tasked to find the uke. the uke seduced him in order to scare him, but the seme fell in love instead. it ended with the two of them happily doing school punishment for skipping class together (???) I KNOW this description is all over the place but i’m desperate T___T THANK U LOVE U