Determination Is A Plague: The Conclusion To A Gravity Falls/Undertale Crossover

"Kid, you're not going home."

"Wh-what?"

"We'll stay down in Snowdin together, instead of you leaving me. Toriel can be your teacher, and... And you'll never be lonely again, I swear. Your brother won't be that far away, and we'll stay together... Forever... And i know I suck at making promises but, I promise I'll do anything for you, Mabel. You won't regret making this decision, I promise."

The girl embraced me, tears streaming into my hoodie. "Thank you so much Sans..."

"You're gonna be perfect for the BoneZone..."

"SANS!"

•••

The summer has finally come to a close, but the mystery of Gravity Falls hasn't ended yet. Mabel Pines stays with Sans, an average skeleton who seems to be the perfect match for the girl. Dipper on the other hand is on the surface, learning the mysteries of the little town with his Great Uncle Ford. But, when one evil soul falls, another rises... Or in this case... Two...

Note: Please read the first two books "Underfalls" and "Breaking The Barrier" before proceeding. Thank you.