Kojima, a student of her husband Satoshi, who was a teacher, came to announce their marriage. - Satoshi is overjoyed with his marriage and quickly passes out drunk, leaving Satoshi's wife Ryo and Kojima alone in the living room... - Marriage Blue's Kojima is attracted to Ryo's accommodating ability, and he can't help but push her down. - Ryo also allows herself to be touched by a man other than her husband due to the elation of being touched for the first time... - Sex with a young man who is about the same age as a father and son is exciting, and even though Ryo knows it's not good, he can't resist it, and they have sex over and over again...