To Dear, My Sorrow(2016)

Kanashi

Shouma Tsuji was on his way home from work when he finds a drunk man plastered all over a garbage heap. Pitying the man's state, he decided to help and brought the man to his home. He lets the man use his shower, and once the stranger is all sober and cleaned up, Shouma's surprised to find that the man he helped was Takeru Ashida, a school mate from his middle school days. Takeru was well-known back then, and his gay reputation didn't exactly endear him to his Shouma's peers.

Now, looking at an adult Takeru, Shouma is left with mixed feelings. Takeru reassures him that he doesn't really remember much though he points out that Shouma has a kind nature for taking him in. He also shared that he was drowning his sorrows due to another rejection. Takeru then takes advantage of Shouma's kindness, which leads to more things than one.

(Source: Futekiya)