My Pretty Class Student 1 ep4 - Virgin schoolgirl has sex with her senpai

The story is mainly centered on Kakeru and his relationship with four girls from his high school. It focuses on one girl per episode - the cute and friendly Urara in the first, the forsaken tennis girl Rie in the second, the dog-owning painter Hikari in the third and the tough-fighting motorcycle girl in the final episode. Which girl will Kakeru choose to be with by the end of the fourth episode?