Yoji returns to his parents house, but his brother and his wife seem to be a little out of touch ... - Apparently he has a fertility treatment policy. - Yoji keeps a distance, but he happens to take a peek at the activities of his brother and his wife ... - He cant take his eyes off the nasty appearance of his quiet brother-in-law, and he notices it in Ai. - Ai, who she really wants to get pregnant, seduces Yoji if its the sperm of her brother. - Yoji, who was swept away by the foolery of her sister-in-law who was sweaty and urged to ejaculate many times, finally released a large amount of sperm into the back of her vagina.