[Machine Translation] Kasumi and Hiiragiichi, who live in a house called "Tsubaki Yashiki," are a "fake couple" who got married for some reason. -Recently, however, they seem to be developing feelings for each other that can't be described as a disguise. Then, Akinori, Kasumi's ex-marriage, moves into "Sumire-so", an apartment behind the Tsubaki mansion! His purpose is, of course. And, by chance, Sumire finds out their secret...? Volume 3.