Takeshi fails his entrance exam and ends up spending his ronin period at his brother and his wife's house. Takeshi had feelings for Kana, who lived under the same roof, as if they were his brother's wife... Whether she knows Takeshi's feelings or not, she will seduce Takeshi with her sexy body and voice. But that temptation always ends in a stalemate. The real purpose of Kana's seduction is in the couple's bedroom.