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.
Cleaning to eliminate every last speck 
of dust is an Asamura family tradition.
إنَّ التّنظيف للتخلّص من كلّ ذرّة غُبار
هو من تقاليد عائلة أسامورا
„Bis das letzte Staubkorn ausgerottet ist“,
das ist das Asamura-Familienmotto!
Nuestro lema es "aniquila
hasta la última mota de polvo".
Nuestro lema es "aniquila hasta
la última mota de polvo".
La règle à la maison,
c’est d’exterminer les saletés.
Cancellare ogni particella di polvere
Exterminar tudo para não
deixar um grão de poeira.
Девиз семейства Асамура: 
«Уничтожай всё до пылинки!»
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