I Just Wanted to Say I Like You

Nao has the worst luck with men—cheated on, treated as just a fling, never anyone’s first choice. No matter what, things never seem to go his way. And for some reason, Misumi, a fellow student from his department, always picks fights with him whenever they cross paths.
One night, after drinking too much and ending up too drunk to stand, Nao is unexpectedly helped by Misumi. They end up getting a hotel room and Nao finds himself venting about his ex. As usual, their conversation escalates into an argument, and before they know it—one thing leads to another, and they end up having sex…

(Source: Homesha, translated)

Note: Includes one extra chapter.