YES it's Tentacles

It takes a few minutes to reach the end of the carpet leading to some very fancy cushioned stairs

You walk up them not knowing what to expect

A few seconds later you realize the sound that was just a natural cave sound was actually THOUSAND OF GOD DAMNED TENTICALS. Your body shudders and your mind boggles at the sheer number that infest this oasis in the center of the cathedral.

But to the disappointment of the reader our MC is not immediately brain fucked because this will soon become both her temple and her home, Oh yes I promise you that there will be so much fucking to be happening soon. This is a story with porn not porn with a story.

You are noticed but most of them seem to be sleeping only two seem to be interested and a third appears to be trying to bury it's self in it's brethren.

Additionally you observe some how that the tentacles are covering a path to the center of the 'pool' which a massive ancient looking creature rests. Feel a pang of sorrow for this creature although you don't fully understand why

The two that noticed you at this point slither up to the edge of the pool of tentacles slowly not really having any rush laziness to their behavior

One transforms into a table and the other raises it's penis as if asking for something

Thinking that it's asking for a blowjob you sit down legs cris crossed on the stone and call it forwards. It moves forwards wrapping around your boots pulling them off and setting them on the 'table'

You cover your face and breasts in embarrassment as your switching from so many shades red and your nipples are getting really really hard now.

Your cringing however is ended by a few tentative pokes by the penis on your hand covering your face. Lowering your hand you stare at the penis.
The penis just hangs there waiting to server the maiden

You tentatively wrap one of your right back hands around the shaft of the penis and guide it to the lips of your mouth. You slowly taste it trying to not only satisfy your horny body but also to answer a few questions.

It's bland but not bad at least tentacle pre-cum is. You start being more adventurous guiding the tentacle further into her mouth and rolling your tongue over the head of the penis.

You happily savor this odd treat for a while letting all of the thoughts about the changes disappear for a second. You even allow the tentacle to slither around your shoulder and begin to gently thrust.

Soon though you feel it twitch and pull out of your mouth. Still wanting more though you keep your mouth open and try to continue drinking from it.

You are however rewarded for your greed as a truly wonderful liquid is shot from the penis directly into your waiting mouth. You open wide for a solid five seconds as the tentacle climaxed feeding her with something very delicious to you.

You roll the viscous liquid in your mouth smiling finally before closing and swallowing with a few loud gulps it's now enter your body. You lean back with two arms proping you up another two wipe up the remains and the last two gently guide the penis back your mouth to extract the remaining of it juices still in its urethra