@Rohen he didn’t leave her. They weren’t doing well so he went abroad to work so he can pay their bills. The brother’s got it hard too, you know. MC isn’t the only orphan there, even the brother lost his parents cause their family.
Also, for someone who witnessed their Mom literally disappear and is haunted by the question, “do you believe in destiny?”, I would have thought that they’d be more into believing in something weird, especially when it’s given to them.
Or at least turn into extreme denial, not both. Haa~