Tsuruki Ui:

Age: 19

    Tsuruki is a fine young man. He doesn't seem to get dates or have any experience with women. So what does he do? Why, turns to his childhood friend for "help". Now, Tsuruki finds himself addicted to her and wants more!

Nao Mizuno:

Age: 19

    Nao is Tsuruki's childhood friend. She moved in the dorm with him. Nao herself has no experience with men. So when Tsuruki asked to practice with him, she agreed. Now, Nao craves him, needs him, desires him more than ever!

Saori Yuasa:

Age: 19

    Saori was Tsuruki's crush. She ignored him until college. Saori grew to desire Tsuruki for herself. She is jealous of Nao.