Chara x Frisk

(my AU) in a world where mobsters and humans never got along, monsters were trapped underground, each time a human fell they would die, but Frisk lived, Frisk got the power to reset, and when he presses it everybody forgets what had happened and they go back to whenever they want, but he also got a soul attacked to him called Chara, who wants to kill all monsters after he died at one's hands. Frisk is currently fighting Sans and Sans has killed them at least 13 times at this point but Chara is still pushing for them to keep fighting saying Sans can't dodge forever.