M.A.N.A

Mana Sano is a high school girl who works as a private tutor to support her family. Despite her excellent grades, she has no time for a boyfriend due to her difficult circumstances.

After a lesson with her student Taichi, a sudden storm prevents her from returning home. Stranded at his house, she is invited by his father to stay the night. When she learns that Taichi's mother passed away years ago, the lonely father takes advantage of her desperation for money and makes her an indecent proposal.