"I got excited because of Kana. Please take responsibility..." Tanaka, who was visiting his friend Morisawa's house, has always admired Morisawa's mother, Kana. Tanaka is so intrigued by Kana's beauty and kindness that he is entranced every time he sees her, so he sneaks out of his room to peek at her. Tanaka finds out an unexpected secret there, and uses his weakness as a shield to get close to Kana...