Rikutaro and Mariko are in the same grade at an elementary school. They become brother and sister after Rikutaro's mother and Mariko’s father marry. After their marriage, the children become upset because they are teased by their classmates, so they hatch a plan to make their parents divorce.
| Directing | Koki Fukuyama | Director |
| Sound | GLIM SPANKY | Theme Song Performance |
| Sound | Hiroki Kamemoto | Theme Song Performance |
| Sound | 松尾レミ | Theme Song Performance |
| Writing | Kaori Moriyama | Screenplay |
| Writing | Koki Fukuyama | Screenplay |
| Editing | Osamu Suzuki | Editor |