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?
I never thought you'd figure it 
out from that child's drawing.
Hätte nicht gedacht, dass du von diesem
Kinderbild drauf kommen würdest.
¿Quién habría pensado que ese 
dibujo infantil me delataría?
¿Quién habría dicho que me 
delataría el dibujo de una cría?
Si l’on m’avait dit
que ce dessin me trahirait…
Non avevo neanche pensato che 
avresti potuto arrivarci da quel disegno.
Nunca pensei que você ia descobrir
 por causa de um desenho antigo.