Rentaro encounters the smartest student in school, Eiai Nano, and it turns out she's a soulmate, too! However, her extreme rationality leads him to question whether they really are meant for each other.
Why did I do that?
لماذا فعلتُ ذلك؟
Warum habe ich das nur getan?
¿Por qué hice eso?
¿Por qué hice eso?
Pourquoi ai-je fait une telle chose ?
Perché mi sono comportata in quel modo?
Por que eu fiz aquilo?
Почему я так поступила?!