Lustful Innocence

UnderLust
Lust Sans x Innocent reader

When I say innocent, I mean innocent.
1. You don't know any sexual things whatsoever.
2. Anything that's somewhat sexual, like licking popsicles, is super sexul without your knowledge.
3. You are easily convinced that Sans has a grape popsicle that shoots grape juice.

You convinced this is a true innocent reader x Lust Sans book yet? You should be.

Plot: You had fallen into the Underground with knowledge of monsters living there. Your parents told you to stay away, but never told you why. Not only that, but they kept you from any contact with the opposite sex. And you were homeschooled, so you