Kazuya came to visit his brother's house during summer vacation. Kazuya was excited to meet his sister-in-law, Kana, whom he had long admired. The disgusting foolishness brings back her love, which she had given up thinking that she would be living a happy newlywed life with her brother. At that moment when her brother went out for work and was alone, the passion that had been suppressed for many years overflowed and attacked Kana.
