Yuki returned to the countryside after many years of living in Tokyo. This is where he was born and raised, holding memories of joy and sorrow, especially memories of Yuki's sister-in-law. When he was young, he and Shizuka were very close. Because Shizuka was the eldest and older, she always treated him like a younger brother. Whenever they went out, people saw them as siblings. This made Shizuka happy, but Yuki did not want that. He wanted to be Shizuka's little brother but also wanted to be her man! However, Shizuka fell in love with Yuki's older brother and moved towards marriage. Wanting to forget everything, Yuki left his homeland and moved to live in Tokyo. But upon returning, memories of the past resurfaced in his mind. Shizuka was still the same, even more beautiful than before.ATID-557 My sister-in-law is... my old crush The siblings warmly welcomed Yuki, prepared delicious food, asked about his life. That night, while getting a drink, Yuki accidentally discovered that his sister-in-law wanted to be intimate with his brother, but his brother firmly refused, allowing him to witness the entire scene of his sister-in-law masturbating. Knowing that Shizuka was not satisfied, a sudden desire to possess her arose in Yuki's mind. The next morning, while his brother was at work, Yuki took advantage and made a move on Shizuka! Shizuka knew about Yuki's feelings for her but it was too late. She loved her husband and her husband loved her. However, she could not reject Yuki's feelings for her. During their time together, the two of them secretly engaged in a physical relationship. When bidding farewell to Yuki, Shizuka wanted to know when he would return, but Yuki knew that he would only hinder the happiness of the woman he loved. In order to truly forget Shizuka, he would never return to this place...
