Arata Kasuga, a high school student, is being targeted by a girl with humongous boobs. In exchange for his life, Lilith says that she can erase his memories, but he chooses the third option. As a result, he ends up at a magic school, but why is there a naked girl in the men's bath?
Swallowed up by the gravitational 
quake, this whole town...
Von so einem Gravitationsbeben
wurde die ganze Stadt erfasst …
La ciudad fue devorada por 
el sismo gravitatorio.
La ciudad fue devorada por 
el sismo gravitatorio.
Questa città è stata inghiottita nel giro di una notte.
Essa cidade desapareceu, foi 
sugada pelo tremor gravitacional.