Amato Takeru, a high school student, has just moved to Akihabara. He's chosen a house with cheap rent, but with one particular imperfection: a hole in the living room floor. When he peeks into it, a girl pops out... And so begins the hectic life of Takeru and the cat Eto-musume, Nya-tan.
You know, if you're leaving, 
you should use the front door...
...عندما تغادرين، ينبغي أن تخرجي من الباب الأمامي
Geh nächstes Mal
zur Vordertür raus.
Si vas a irte, usa la puerta delantera...
Si vas a irte, usa la puerta principal...
Si jamais tu reviens,
Sai, per andartene 
dovresti usare la porta principale...
Sabe, se você vai sair, devia
 ir pela porta da frente...