yuuna hasegawa lives in the same apartment complex as her neighbor, nishino, who has fallen in love with her at first sight. he confesses his feelings but is gently rejected. one day, while yuuna is happily entering her room with her boyfriend, nishino sees them and becomes furious. he spiked her drink with aphrodisiac and forced her to have sex. "hey, i know some interesting guys, why don't you join us?" during the three days her boyfriend is away, yuuna is repeatedly raped by nishino and his friends in a never-ending creampie rape attack.