Takagi, who came to visit his classmate's house, had been fond of his friend's mother, Rika, from an early age. Takagi is uncomfortable because she is worried about the beautiful and gentle womans that she unconsciously chases with her eyes. When I secretly ask about Rika on the way to the bathroom ... I come across a decisive scene where Rika is having an affair. Takagi makes his emotions runaway due to the shocking fact.