Sunjinmuguneun Gollan

On the day of the high school graduation party, Woobin receives a confession from Hyunho, a male student at the same school. Woobin finds it absurd that the first confession he received as soon as he turned 20 was from a guy, but he feels sorry for Hyunho who is weeping.. so he ends up dating him.. (Source: MrBlue, translated)