His Favorite Vol. 9 (manga)

Awkward Yoshida's life got flipped upside down when the hottest guy in school started going out with him. Things should be easier for Yoshida now that his whole class knows about his relationship, but it's never that simple with Saito as a boyfriend. And with Valentine's Day just around the corner, Yoshida has quite the challenge ahead of him if he hopes to satisfy Saito's demand for a special treat.