You're Flow Asriel, called Azzy or Flux by her. Your mom. Your dad, Asgore doesn't live with you, but you visit. You live in the Underground with Toriel. She understands what you did as Flowey.

You're in your room, previously yours and Chara's. You look over at what used to be Chara's side of the room and sigh sadly. You eventually lay down in your bed