After several happy years of marriage, Tsumugi still makes her husband lunch every day. A cocky junior claims wives married three to five years are easiest to seduce, and the husband foolishly challenges him to try. He invites the man home, invents an excuse, and leaves him alone with Tsumugi for three hours. When both insist nothing happened, he believes them completely—unaware she has been pounded without withdrawal and filled sixteen times.