Hetakuso Love Step

Hetakuso Love Step summary:

Spring: the second year of university. A time when a student should be able to enjoy their freedom and youth. Even though Kotarou has no friends and no girlfriend, he enjoys his calm life.
However, because his beautiful childhood friend Miyako was being pursued by the university playboy Yoshino Aoi, Kotarou was forced to pretend to be her boyfriend.

Kotarou thought that he was able to fool Yoshino, but he was easily caught. "I've given up on her, so I want to get along with you now."

Yoshino then takes Kotarou to the bathroom to teach him some things...