High school student Yuta Asamura begins living with his stepsister Saki Ayase and her mother due to his father's remarriage. Both Yuta and Saki, who hold cautious values regarding relationships between men and women, agree to live with an appropriate sense of distance between them.
So I cut ties with all but one of them.
لذا قطعتُ روابطي معهن جميعاً ما عدا واحدة
Por eso me desprendí de todos menos uno.
Por eso me he desprendido
de todos menos uno.
C’est pour ça que je parle plus
qu’à l’une d’elles.
Ecco perché ho tagliato i ponti con tutti, 
tranne che con una persona.
Por isso, tirando uma pessoa,
eu cortei meus laços com todo mundo.
Поэтому я почти со всеми из них порвала.