It Wasn't Me (Undertale) (Sans x Chara)

Sans is nothing short of a cynic. Depressed, lonely, unable to find a good reason to get up in the morning... The resets, the genocide, the love of his life killing his family mercilessly. Unless... he can prove it wasn't her? Those red eyes don't belong to her. So who...? He soon finds out it was Chara, the young demon who'd wormed her way into the royal family and killed the prince. However, as the memories ⁠-⁠ but not the nightmares - of the genocide begin to fade... He realizes that his so called girlfriend is a cheating, lying bitch. And that perhaps Chara... isn't who she seems, either.

Sans = 16
Chara = 14