I wish I hadn't let my wife go to that class reunion... I've heard about the number of guys I dated before I got married, and how many people experienced it, but I never thought I'd dated such a perverted bastard... Ichika was at the class reunion. Former boyfriend Uchida remembers the time when he was dating Ichika, makes him drink strong alcohol, and says, "Continue with the past obscene act," and forcibly fucks Ichika. Ichika, who had troubles with her husband's sexual activity, remembers her past sexual activity with her perverted ex-boyfriend.