Now, we can take this in a lot of different directions, but in the interest of stimulating some creativity, here's some (maybe not so creative) ideas of my own:

Modern:

* A shy college student grows close with the librarian.
* A college student sleeps with her professor, perhaps for her grades or just out of attraction.
* A clumsy, awkward intern faces losing her internship, but her boss has alternative ideas for what she can do for her.
* A young idol has an undying affection and loyalty for her manager, and she'd do anything to please her.
* A model/cosplayer gets hit on by her camerawoman during a photoshoot. She simply can't help but find her attractive.
* A drunken fling between a young woman and her best friend's older sister.
* A therapist with an unconventional idea to help her patient accept herself and her attraction to girls.
* A young yuri author gets some real-life experience with her publisher, or perhaps an older fan of her work.

Fantasy:

* During a ball, a young princess/noblewoman finds herself too shy to interact with anyone. An older woman spots her and leads her off somewhere quiet to calm her down and "get to know her".
* A noblewoman is kidnapped by a fearsome but gorgeous pirate queen who's eager for ransom money. The pirate then decides to have some fun with her prize before the money comes.
* After being turned into a vampire, a scared young lady runs to her local church to beg the head priestess to help save her soul. Fortunately for her, the priestess knows of a "sacred" and "intimate" ritual to help her with\~
* The new maid is clumsy, forgetful, and bad at basically every basic chore, but the lady of the house keeps her around for her body and her tongue.
* A young lady grows intimate with her attendant maid after her 18th birthday, unable to resist the touch of her fingers when she helps her bathe or change her clothes.
* A young peasant girl dreams of attending the prestigious magic academy in her city, but lacks the necessary funds. After the headmistress of the school notices her talent, she offers her a tuition-free enrollment, provided she can do something of value for her.
* After accepting a stupid dare, a young lady attending the prestigious girls' academy finds herself in a brothel, and the dancers are all too eager to toy with a lost little lamb like her.
* Desperate for money, a young woman accepts a job as a maid for a local noblewoman. Unbeknownst to her, her new mistress is a vampire with a particular taste for maiden blood, and the new maid soon finds out that even a vampire bite can feel orgasmic.

Magical Girls (guilty pleasure\~):

* After being captured by the demon queen, the defeated magical girl is subjected to something other than pain and misery.
* Magical girls require handlers to operate legally. One magical girl and her handler are particularly close with each other\~

[F4APF] Hey there! I'm looking to do a yuri RP involving age difference! I'm open to discussing all the specifics, plenty of ways this can go! I prefer Discord, mine is Heccity#4584 (try "heccity" if that doesn't work), but we can also RP here if you'd like.