There's this theory that on an assassin mission for Seven, he ignored a woman (Presumably that girl's mom) who was attacked by a lamia monster and allowed her to die. This was because a rule as an Shadow Assassin is to "Ignore all that's irrelevant to the mission". The Girl Seven tried to save must've hated him for that
@@nagaratype4759 It has not yet been revealed. The girl he tried to protect was likely just someone Seven befriended and came to love. The woman that Seven left to die was theorised to be the girl's mother.
I *think* she was an assassin that was posing as a target to get close to Seven? If the reason was revealed already, my memory is a little fuzzy on the details. But I stand by my theory for now