Kohei is staying with his brother and his wife for a while while he is job hunting. He meets his brother's wife Saya, whom he has had feelings for for a long time... The next day, Kohei starts job hunting, but things don't go well. He is harsh to Saya, who encourages him, and in the heat of the moment, he kisses her. Unable to bear the awkwardness, Kohei apologizes, and Saya, who has not seen him for a long time, feels the ache of a woman and involuntarily seeks him. Feeling love for Kohei, who clings to her with madness, Saya enjoys the pleasure herself and makes a promise with Kohei...