Fujiko's Bizarre Worldly Wisdom -Whitesnake's Miscalculation-

"One of these prisoners was such an unexpected let-down.....such a miscalculation.....that they were made to have "never existed" in the first place."

Fujiko's Bizarre Worldly Wisdom -Whitesnake's Miscalculation- (フジコの奇妙な処世術 -ホワイトスネイクの誤算-) is the name of a spin-off  manga both written and illustrated by Sho Aimoto.

The spin-off debuted in Ultra Jump's January 2022 issue< on December 18, 2021, the same issue that Crazy Diamond's Demonic Heartbreak first debuted, sharing the cover with it and other manga.

Summary
Fujiko's Bizarre Worldly Wisdom -Whitesnake's Miscalculation- begins with Jolyne Cujoh retrieving Jotaro Kujo's DISC. Enrico Pucci then uses his Stand, Whitesnake, to manipulate several Prisoners to get it back. However, Whitesnake makes the title miscalculation by enlisting the assistance of the title prisoner.

In Jolyne and Gwess's shared cell in Green Dolphin Street Prison, Jolyne discovers a drawing on hers and Gwess's shared desk, to which Gwess soon takes it back in embarrassment. Jolyne asks what it was all about, then Gwess explains that it is a drawing she bought from an artist, Fujiko Fujiyama.

Later at lunch, there is a commotion from an extremely excited woman begging the mysterious artist to hurry up and begin her commission. Fujiko says she is too busy to begin it yet due to other requests, but bumps it up to a priority after receiving some extra money from the woman. Soon following, Fujiko approaches, Jolyne, Ermes, and Foo Fighters, asking Jolyne if she would like a quick sketch, noting that she knew that "one of the guards had caught her doing it alone in her cell". Jolyne is embarrassed by the fact that such information had been spread around, to which Fujiko soon halts the discussion between the three friends to explain how much a nude commission costs per person in the drawing, further saying that should they want a commission such as "Spider-Man X Deadpool" like the girl causing a ruckus before had requested, it would cost them for reference material, to which the girl from earlier yelps, upset that Fujiko does not believe in client confidentiality. The girls are confused by Fujiko's intentions, Fujiko then explaining that she is a "Shunga" artist, which is a simple term for hardcore erotic Japanese pornography. She further attempts to pull Jolyne into it by describing that she believes Jolyne would be into that sort of thing while groping her lips, neck, and chest, prompting Jolyne to quickly slap away her hand. Jolyne then discovers a drawing of herself on Fujiko's sketchpad, which she immediately purchases. As Ermes mentions that it does not resemble her much, proportionately, Jolyne is still enchanted by it, saying that she wishes to buy it since she doesn't need it, believing that doing such is a sign of great mental composure.

Afterward in the recreational yard, Jolyne is called out for failing to do the yoga poses correctly. She tries to do better but cannot and is incredibly distracted due to being severely aroused. In her mind, she begins running down the possibilities, first believing it to be the eels or oysters she had for lunch, before realizing it as an attack from an enemy Stand.

Meanwhile, Enrico Pucci and Whitesnake spy on Fujiko in her cell. Fujiko reveals her Stand, "Bad Romance", which manipulates the feelings of anyone who takes one of her drawings. Upon closer inspection, Pucci discovers that the art she is drawing is no longer Shunga, but sacrilegious inserts featuring Jolyne. Disturbed and upset that the woman would draw such a blasphemous thing, Pucci uses Whitesnake to remove Fujiko's Stand and memories, revealing that he input the interest of Jolyne into her memory disc, making it as though she never quite existed. Jolyne is now freed from the strong emotions she was feeling and believes this to be the power of yoga. Fujiko returns to her old amateur shunga artist ways, but no longer receives near as many commissions as she previously had due to the effects of her Stand.