L'histoire prend place dans le quartier d'Ikebukuro et se centre Mio et Shin, deux amis d'enfance. Mio est amoureuse de Shin et pense toujours à lui, mais n'a jamais pu lui avouer ce ...
An ordinary walk home from school turns into an epic journey for Usato. After suddenly being dropped into another world with two fellow students, Usato learns he was summoned there by ...