Mikage is a librarian who stocks the library full of BL (Boy’s Love) erotica. Fran gets hooked and spends a sleepless night reading Mikage’s recommendations, after which she meets up with Mikage so the two can creep on guys they think would be hot together (all while making hentai faces at each other).
Okita rains on Fran’s parade by saying that real homosexual relationships between men aren’t like how they’re depicted in BL manga. Fran gets pissed and storms off in a huff. Sulking in her lab, she begins pondering the nature of homosexuality in men. She comes to the conclusion that testosterone produces aggressive behavior and an interest in women, so gay men must have a lot of estrogen. She invents a pathogen that will convert testosterone into estrogen, in order to create a “Boy’s Love Paradise”. She shows the prototype to Mikage and tells her that she’ll begin trials with willing volunteers, but Mikage steals the vial and plans to release it. Fran goes to stop Mikage before she can release it into the water supply, but then gets horny thinking about all the gay sex it’ll produce, and decides to let it happen.
As she predicted, male couples begin appearing everywhere. Mikage contacts Fran again and confesses her frustration over not being able to partake in all the new romance going on. Fran performs a sex change operation on her, and Mikage transfers schools so he can begin a new life where he can flirt with all the men he wants. However, Mikage is cornered by a huge crowd of men who confess their love for him and proceed to gangbang Mikage (who cries about how this isn’t at all like BL erotica). Back at the lab, Okita asks why Fran hasn’t been reading BL erotica lately, to which she replies that she lost interest in it after seeing what it was really like.