When the suspect of an arson case refuses to cooperate with the investigation, the detectives search his house and find a locked-up little girl. She doesn't talk and there are no clues to her identity, so assistant psychology professor Narumi Saku is asked to counsel her.
| Actor | Role |
|---|---|
 Tomohisa YamashitaNarumi Saku | Narumi Saku |
 Fumino KimuraAbiko Miori | Abiko Miori |
 Yōsuke AsariAbiko Kento | Abiko Kento |
 Konomi WatanabeNao | Nao |
 Kazuki NamiokaNakazawa Wataru | Nakazawa Wataru |
 Muga TsukajiAndo Jiro | Ando Jiro |
 Takehiro KimotoKonno Minoru | Konno Minoru |
 Yasuhi NakamuraSeta Koji | Seta Koji |
| NNakano HarutoSeda Hiroshi | Seda Hiroshi |
 Mari HoshinoSeta Aiko | Seta Aiko |
 Eiichiro FunakoshiYagami Keisuke | Yagami Keisuke |