I'm not entirely sure what 'capitulo simpsons pulp fiction' specifically refers to. If 'capitulo' means chapter in Spanish, perhaps it could be about a chapter related to 'The Simpsons' that has some connection to 'Pulp Fiction'. Maybe it's a fan - made crossover idea where elements of the two are combined in a particular chapter or story.
I recommend the book "Possibly a Fake Silver Soul". It tells the story of Jiang Cheng, a transmigrator, who met the owner of Xinghai District and his girlfriend, Jiang Hua, who were traveling in the universe in the dragon vein of a certain planet. Later, he came to Earth and met his teacher, Yoshida Shoyo, who had influenced his life. He also met a group of friends. This included the transmigrator Okita Soki. This is a Silver Soul Doujinshi novel, don't miss it. I hope you like this fairy's recommendation. Muah ~😗
Another theme might be the subversion of expectations. We expect the Simpsons characters to be in their normal, comical situations. But if there are elements of 'Pulp Fiction' involved, like unexpected violence or complex moral situations, it subverts what we know about the Simpsons. So, subversion of expectations could be a theme.
Gintama is purely fictional. It's filled with imaginative characters and scenarios that are not rooted in real-life events. The creators crafted a unique and entertaining fictional world for the audience.