Ouji na Geboku no Aishikata

From Intercross:

Juri has always admired Makoto-senpai as a 'cool beauty'. One day, she accidentally overhears senpai's girlfriend breaking up with him which then she realizes, senpai is actually an M?! Even though shes caught by Makoto-senpai, Juri is so heartbroken over her now shattered image of senpai, Juri slaps him then runs away. But the next day, senpai...?!