Why did the girl have to lose her memory?

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.

• Shunsuke MoritaDirector
• Masahiro IshidaDirector
• Yuko MatsudaWriter

• Tomohisa YamashitaNarumi Saku
• Fumino KimuraAbiko Miori
• Yōsuke AsariAbiko Kento
• Konomi WatanabeNao
• Kazuki NamiokaNakazawa Wataru
• Muga TsukajiAndo Jiro
• Takehiro KimotoKonno Minoru
• Yasuhi NakamuraSeta Koji
• Nakano HarutoSeda Hiroshi
• Mari HoshinoSeta Aiko
• Eiichiro FunakoshiYagami Keisuke