A soon-to-be-graduating girls, in high school, find out that their homeroom teacher is terminally ill. He writes each of them inexplicit letters. While they encounter various difficulties in their senior year those letters will help them to resolves their personal issues and grow to be better persons and friends.

• Yuko Oshima
• Atsuko Maeda
• Takaya Kamikawa
• Tomomi Itano
• Haruna Kojima
• Mayu Watanabe
• Sae Miyazawa
• Yuki Kashiwagi