Hoshina Rin

A school student. He is afflicted with a medical condition that will change his sex to female within the next year. Because of this, he moves to an all-girls school, where he starts wearing a female uniform and learning how to be a girl.

When the transformation nears completion, he is sent to the hospital. Afterwards, she accepts herself as a girl. Depending on the player's actions, she can potentially enter into a romance with one of her classmates, and she can also get pregnant.