Ren returns to the town of his childhood, Kaminohara. 
Strangely, Ren is unable to recall any memories of the town. 
Meanwhile, his smartphone installs a mysterious game called Monster Strike — heralding the start of a desperate battle!
To be honest, I don't really
remember much, but it's good to be back.
Eigentlich erinnere ich mich an nichts,
aber es ist schön, zurück zu sein.
De hecho no recuerdo nada,
pero me alegra estar de regreso.
Para ser honestos, no recuerdo mucho,
pero me alegra estar de vuelta.
Na verdade, eu não me lembro de nada,
mas é bom estar de volta.