A young salaryman finds a teenage girl sitting under a lamp post on his way home. She offers to sleep with him in exchange for a place to stay. He turns her down, but gives her a place to stay anyway. Their strange life together begins...
I didn't realize how hard it is 
to live with a teenage girl.
unterschätzte ich noch schwer, wie anstrengend es ist,
mit einer Oberschülerin zusammenzuwohnen.
yo había subestimado demasiado
lo difícil que sería
subestimé enormemente
lo complicado que sería
je sous-estimais
largement les difficultés
non avevo ancora capito quanto fosse difficile 
vivere assieme a una liceale.
eu não sabia como era difícil
viver com uma adolescente...
я ещё понятия не имел, насколько непросто
будет жить вместе со школьницей.