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!
Huh? What's that sound?
Was ist das?
¿Qué es eso?
¿Qué es eso sonido?
C’est quoi ce son ?
O que é isso?