Butterfly Effect, that single time jump to save his sister was just tiny bit that didn't effect much of the world as they were in enclosed school but them having an actual healthy family would have unforseen circumstances, one of which is he would never join the school he is currently in and never met Nao nor his brother being captured then forming an organisation to protect power users that gained abilities through Charlotte comet.
It would be better if his mom had to give birth because it would kill her, because it's doubtful she didn't check within 24 weeks (even if she didn't tell her husband, it's something ine should do) if she wasn't pregnant, even then it's perfectly legal to do so.
Still, divorcing because your wife was pregnant and due some unknown circumstances want to keep the baby is just fucked up.
Either way, they have the powers to actually fix it. Considering the amount of time leaps done yet nothing shown about the family, could imply that there’s always been a fall out. Just like how they’ve always been on the run from such organisations. Meaning they should have had always known that something will happen to split their parents.
This additional plot isn’t well written because it leaves you wondering more on, “what else,” and “why.”
I wouldn’t blame the father. Mainly, rape is the problem here.
Some people still support their former partner in a way, even after splitting. Perhaps, as a husband, he can’t accept having to raise another child from someone else. Yet, the wife wants to keep the child, else she would have put it up for adoption. It is honestly unfair to the husband as well. He has no blood ties to this child, and it’s a reminder of rape, yet he has to help raise it if he stays with his wife. Additionally, some women would scorn the child though, especially if she had no choice but to carry it to term.
The optimistic way for the split is that, he supports his wife’s decision and perhaps supports her in other ways, but at the cost that he won’t be there to help raise it.
I’m being optimistic, since it was kind of vague, so that this story won’t feel any further ruined.
I still hate this stupid addition to the story. Really ruining it by adding an unnecessary sensitive situation.