I've written 3 pretty robust tentacle story ideas, all with different approaches though all are rough outlines and none of them properly verbose literotica. All 3 are under the "Tentacle-men have pregnant sex with girls" theme. 2 are about tentacle monsters gaining handsome masculine transformations, and 1 is about a human mage king who can summon and use tentacles.

I call them:
[p1/2]