It's been four long years since Frisk saved Chara. Chara had tried to thank the child by helping them rid and keep away the Anti-Monster cult members, but it didn't seem enough. Frisk finds a way to thank them in return for not trying to kill anyone these past four years by giving them a gift they would never forget.
There will be hints of sin. If the sin hasn't been fulfilled, that is. <:
Created: March 15th, 2016.
Second book: Determination
Underfell AU: Save