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.
Human emotions such as joy and gratitude—
...عواطف البشر مثل البهجة والامتنان
Menschliche Gefühle,
wie Freude und Dankbarkeit …
Las emociones humanas como 
la dicha y la gratitud...
Las emociones humanas como 
la dicha y la gratitud...
Les gens heureux ou reconnaissants
en possèdent.
I sentimenti umani come gioia e gratitudine—
Emoções humanas como alegria e gratidão—