Goodnight, Kiddo... (Adopted by Sans! Reader Fanfic)

You are an orphan, abandoned by your parents at birth.
You've lived between countless foster families and a dreaded girl's home for as long as you can remember, because nobody chose to adopt you.
Now, you are fifteen years old, and you decide to run away.
Monsters have been living on the surface come four years now.

What could become of this new adventure?

Heyyyyyy! TheShortSensei here! I strongly suggest reading my former Undertale x reader book, When Spaghetti is your Life, before looking at this one. This book is a continuation of that one, so there may be spoilers if this one is read first! I will probably be using female-based pronouns, but I don't want it to be so gender based. Have fun, guys!

Thank you for choosing to read this trash. Please comment and tell me what you think!

P.S. If you're still reading, you get an invisible gold star sticker from yours truly.

Well, what are you waiting for? I already gave you that sticker, didn't I??