Living under one roof, Shinobu Takatou, 25, shares a strong bond with his elder brother Masaki, and also lives with his mischievous nephew, Kazuomi. However, Kazuomi doubts Shinobu's affection towards their father and harasses him in Masaki's absence, even resorting to inappropriate behavior. While they share an intimate relationship, they struggle to express their true emotions. The outcome of this intricate situation remains uncertain.