Memeshii Aku to Azatoi Suu
Synopsis
Hooking up with your sex friends whenever you like and with no strings attached is the best! Playboy college student and advocate of free love, Suu, ends up sleeping with his friend's persistent and clingy boyfriend, Aku. It was supposed to be a one night stand, but Aku just can't forget about Suu after losing his virginity to him and makes Suu the new object of his affection. (Source: Gentosha Comics, translated)