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.
Something naughty might happen though, right?
لكن قد تحدث أمور شقيّة، صحيح؟
Es könnte aber etwas passieren.
Puede que sí pase algo.
Puede que sí pase algo.
Rien entre vous ?
Pas même des vêtements ?
Potrebbe anche succedere un bel niente, no?
Esses tipos de coisas
só acontecem, não é mesmo?
Я-то расслаблюсь, 
а вот в штанах у тебя...