It's his memory, when the time passes some of his memories become blurry that's why he forgot how his mother died and when Lucy Pandora
no. it was stated that his mother did passed away and his father estranged when he came back...so there was in no way he could see his father killing his mother unless he was too at that time was with them in that trip. thing is he wasnt even there.
he can see other's people pasts too? wutt