A certain tale of brothers. For the sake of home renovation, the second son Yasuhiro Inoue and his mother Ayako Inoue are staying at the house of their real sister, Aunt Sachie Miyamae. However, since it's not their own home, the Inoue boys feel somewhat uneasy. Their mother, too, seems conscious of being a guest, diligently handling all the chores without rest… And so, while watching his mother, Yasuhiro finally noticed something… As did the eldest son and elite salaryman Yohei Inoue, amidst his busy days… Their mother's bra was riding up…
