Saki's ex-boyfriend Yuma suddenly visited her after seeing off her husband who was going on a three-day business trip to Kyushu. Yuma threatened Saki with a nyan nyan video they took during their relationship and forced her to have sex. Knowing that her husband was on a business trip for three days, Yuma continued to have sex with Saki for three days. Despite resisting, Saki, once again, tasted Yuma's intense sex and, despite thinking it was wrong, fell deeper into it.