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.
A stepsister is essentially a stranger.
الأخت غير الشّقيقة ليست أكثر من مجرّد غريبة
Im Prinzip ist eine Stiefschwester
auch nur eine Fremde.
Una hermanastra
no es más que una extraña.
Una hermanastra
no es más que una extraña.
La fille de ma belle-mère
est une simple inconnue.
Una sorellastra minore
Uma meia-irmã não passa de uma estranha.
Сводная сестра — это 
просто посторонний человек.
น้องสาวต่างสายเลือด
เป็นคนแปลกหน้าอย่างแท้จริง.