Die for You

"So I'm Frisk, your Chara, and we're choosing between Neutral and Genocide because trying to be pacifist is just resulting in a second bloody war?" "Basically" Harry would probably have been better adjusted if he didn't have a snarky but not quite evil Tom's voice in his head; or if he hadn't lived with the Dursleys. Grey!Apathetic!Harry, Undertale motifs but not a crossover