Arisu Saotome, unable to forget her ex-boyfriend, gets involved with Kenji, who is only aroused by femboys. Arisu promises to stop pursuing him after one final encounter, but secretly records the sex and live-streams it to her fiancé, Rei. Rei accidentally witnesses the entire act and discovers Arisu's true intentions. Her real goal is to defeat Kenji through pleasure, leading to a twisted, elaborate tale of NTR and anal sex.