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?
and this is my cousin and 
childhood friend, Hijiri Kasuga.
… und das ist meine Cousine und
Kindheitsfreundin, Kasuga Hijiri.
Ella es mi prima y amiga de 
la infancia, Hijiri Kasuga.
Ella es mi prima y amiga de 
la infancia, Hijiri Kasuga.
Elle, c’est Hijiri Kasuga,
ma cousine et amie d’enfance.
e questa è la mia amica d'infanzia,
 oltre che mia cugina, Kasuga Hijiri.
e essa é minha prima e amiga
 de infância, Kasuga Hijiri.