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.
When I talked to my friends about 
this at school, they laughed at me.
عندما تكلّمتُ مع صديقاتي عن هذا
في المدرسة، سخروا منّي
Als ich das meinen Freunden
in der Schule vorgeschlagen habe,
Quando mi comporto così 
con i miei amici a scuola
Meus amigos na escola
não levam a sério essa postura.