A certain tale of brothers. For the sake of home renovation, the second son, Takashima Yasuhiro, and his mother, Takashima Midori, are staying at the house of their aunt, Kuroyanagi Misako. They are also using the room of their cousin, Kuroyanagi Tatsuo, who lives alone while attending a university in Tokyo. Their mother is also conscious of 'living rent-free,' so she diligently handles all the household chores without rest… And as Yasuhiro watches his mother, he finally realizes… As does the eldest son and elite salaryman, Takashima Yohei, who spends his busy days… That their own mother has an incredibly beautiful ass！！
