[Deciding on the point of view. It won't be set until before publication.]
You're a self-insert fan, and a pretty good writer, too.
By "good writer," I don't mean a great literary talent. I mean you're good at writing a certain kind of spicy story.
Your friends have praised you: "You have incredible talent for erotic fiction."
Of course, you're a lifelong single who's only interested in fictional characters. You have plenty of theoretical experience, but zero practical experience. That doesn't stop you from writing hundreds of thousands of words of fast-and-furious sex scenes starring you and your dream guy.
You have so many kinks and such terrible taste that every time you read it, you marvel at how talented you are.
Then one day, you die and transmigrate into this story, which has no plot, no logic, and nothing but sex scenes.
Before You Read:
Romance, one-on-one. Your partner is the Klein from the original ending.
Raunchy and melodramatic, but you only sleep with Klein. No morals, no manners, no shame, and no holding back when it comes to kinks. It's pure smut. But because you have a motherly mindset, your transmigrated identity won't be anyone else's girlfriend or wife. Klein won't be a homewrecker, and there won't be group sex scenes.
It has almost nothing to do with the original story. The settings and plot are only there to give the characters a place to have sex, so you can read it without knowing the original.
The scenes switch with little logic, like an anthology, all in service of the sex scenes. To make the sex work without OOC, there may be plot manipulation or scenes where characters are forced to act through bodily control. In the small worlds, everyone besides you and Klein is an NPC, like a puppet, not a real person.
The ending will probably have you return to Klein's world with him.
Though whether this can be published on Green River is still in question.
Scenes I'd like to write:
1. A nun who devotes her body and soul to a god, only to be toyed with by that god.
2. Tentacle play with Klein the Great.
3. Becoming a Witch and digesting the potion through the Five Seas' Wild Rose.
4. Getting sandwiched between Klein's true body and his avatar.
5. A wealthy businessman and a maid (an older man with a younger woman).
5. The Magician Merlin and a beast-eared girl.
6. The captain at the headquarters of the Goddess's Church and Klein as a member of the Tingen squad (office romance, ahem).
7. Amon tries to steal your lover, and Klein gets jealous after getting him back (you won't sleep with Amon).
8. An idol and her secret boyfriend (the taciturn programmer Xiao Zhou).
[This isn't the order the story will be written in. I'll arrange them according to what fits best. There may be new scenarios later, and feel free to suggest ideas~]
Theme: Take care of your body and exercise in moderation.