Now listen carefully, I'm a fan of the game, both characters are female, so tell me anything I can work on
It's been months after saving the monsters of the underground, and now they all live on the surface, with Frisk living with Toriel.
Toriel leaves a Butterscotch pie by Frisk bed, when she turns around and sees a human with red eyes staring at her. She backs up to the wall by the terror, looking at the terrifying figure "w-who are you?" "you've forgotten me already, partner?" "... C-Chara?".
"You don't deserve this you know" said Chara "what?" "Do you know what you did to them, you made them suffer, you kill them all, even my family". "Wait, Chara, let me explain, back then-" "what, you did this for fun, because you were bored? Give me a good reason". "I-I was... curious" "huh?" "When I did this the first time it was great I could save everyone, but it made me wonder, what would happen if I chose to fight". "I wanted to stop, but my curiosity got to me, the EXP, the LOVE, it all consumed me".
"You know I'm still not forgiving you for this" "wait, I changed that, I went back, I saved everyone?" "Everything you did, it will stay in your guilt for ever, all the people you killed, all the friends you left, it will haunt you for ever".
"So then, what are you going to do?" said Frisk "I'm going to stay with you, making sure you really are serious about this" "I guess I'm fine with that". "But know this kid, if I see the tiniest bit genocide, I'll control your body, and kill us both". "Y-Your not serious, are you?" " it really depends on you" Chara left as Frisk went back to sleep.