Sota visits his friend Takaharu's house, only to find that Takaharu has been sent out on an errand by his mother and hasn't returned. Growing uneasy about his prolonged absence, Sota waits by the entrance but sees no sign of him. At that moment, Takaharu's mother emerges from the shower. Noticing her, Sota begins to follow her—and accidentally witnesses her with another one of his friends. The scene unfolds into a shocking revelation for Sota. The word "affair" crosses his mind, but as the truth remains unclear, he becomes increasingly confused and emotionally disturbed. This work captivates with its dramatic shift from an ordinary setting into an unexpected turn of events. It portrays the complexity of human relationships and the instability of romantic feelings. A seemingly mundane daily life suddenly transformed by a surprising twist—this story draws viewers in with its intense emotional depth.