Kodama Rena's sister and brother-in-law are a very happy couple, but since her sister-in-law came to live with her, things have changed. Kodama Rena always wished to have a handsome young husband like brother-in-law.
Her sister suddenly had to go on a business trip, entrusting her little sister Kodama Rena to her husband's care.
What his wife did not expect was to let a man without his wife live with his teenage sister, craving fuck. Kodama Rena continuously solicited her brother-in-law to make love, the two took advantage of it day and night.