Yuya, who harbors a secret longing for Kyoko—his friend's younger sister Yumi's tutor and their stepmother—steals a pair of Kyoko's panties under the pretext of using the restroom. However, Yumi witnesses the act, and he finds himself being blackmailed.
| Actor | Role |
|---|---|
| AArisa MatsumotoKyoko Okuzawa | Kyoko Okuzawa |
 Lemon HanazawaYumi Okuzawa | Yumi Okuzawa |
| AAki YatôRie Numabe | Rie Numabe |
| TTakuma YanaginouchiYuya Todoroki | Yuya Todoroki |
 Mikiya SanadaKenji Okuzawa | Kenji Okuzawa |
| SSanshirô KobayashiShuichi Okuzawa | Shuichi Okuzawa |