Fanfic recommendations - mature, explicit and not rated

Mature and not rated

Theseus' Guide to Ruining a Perfectly Good Boat (stump_not_found)

Then it becomes, it becomes, it becomes a problem (tempusedaxrerum)

Per Vigilans, Veritas (Keepit6feetunder)

Revertere (Keepit6feetunder)

dream operator (gaylisterine)

Creative Solutions for Ethical Partnerships (GG_Ratley)

Confessions of a Cipherholic (trianglefan)

Beyond Human Nature (Anonymous)

It’s Better Than Sex! It’s Vivisection! (Meekaroonie (Azrul))

Explicit

Take A Chance (sacklunch)

Sacred Geometry (kikaikitai)

Impossible Geometries and Biologies (Anonymous)

Research Me Like One of Your French Girls (unoriginalStarwalker)

Course Corrected (metaphor_cheese)

Wet Dreams are Made of This (PolarKraken)

Eat You Alive (Jackfruit)

Multiversal Manhunt Moved to Your Backyard (Jackfruit)

Wish You Were Here (Clorax67)

Sixcervix Service (Kuromi_Kreepz)