I'm looking for an anime I don't remember much but it's something like a girl gets in to a bus accident and goes into coma and her friend (male) in the future devices an AI girl(?) Who then is sent into the past before the accident happens (I think she's supposed to prevent it ) but the guy from the past ends up falling for the AI girl or something like that . (I know the girl in coma has orange hair and the AI girl has white hair)