Probed By Tentacles (Monster Seductions) by Wren Winter ★★★☆☆

It's Sailor Moon verses the evil tentacle monster! 

Selene has just finished her first college class, she is a perfectly ordinary 18 year old girl with dreams of a rich husband.

Her best friend Molly runs a dress boutique with her mom and has just found Selene the perfect gown. She can't wait to try it on at home but on her way she finds a kitten in a bad way. Animal lover that she is, Selene scoops up the little kitten for some tuna and TLC. The gown fits like a fated glove, which it should, because as her cat informs her, it is the gown of the Princess of Earth. 

Wow! Her cat can talk and she's a reincarnated Princess. Selene promptly faints. Diana, the cat, smacks her awake because that cramping in Selene's belly is not a bad burrito it is the presence of evil! Selene is now Defender of the Earth and has to get a move on with her evil fighting powers. Thankfully, Diana is here to help.

"I can teach you how! Stand up and shout Earth Diamond Power!” 

A sort of orgasmic feeling came over me as a blinding white light formed over part of my body. From it, a white leotard appeared. 

I didn't notice it as a kid but that transition does look like a feel good moment. 

Even with her white leotard Selene is reluctant to go fight until Diana points out it is Molly's boutique getting hit. Selene races to save her best friend.  Many people are unconscious around the store, but the Princess enters bravely, where the monster has been waiting with Molly as a hostage. 

Selene is quickly overwhelmed by the monsters tentacles... then overcome. Oh those naughty naughty tentacles. Talk about loosing the will to fight! The site of Molly getting the same treatment sends Selene over the edge into an epic light bursting orgasm. Nearly blinded by wattage, and pleasure, Selene can still see the monster is no more and hear Diana rejoicing. 

"You beat the evil with the power of your orgasm!” 

Well... that hadn't been the power Selene expected as Princess and Defender of Earth but she reflects...

Now rating this is hard because it was so short. I think as an example of the Sailor Moon Tentacle Erotica genre this was only fair.