Dude read fantasy and you're gonna see the thousands or hundreds age gap(for example Yato and Hiyori from noragami) but a few people only complaints about that, @Arima002 well we have different perspective but their reasoning and opinion are trash.
The MC being a father is trash(well I'm gonna still reading it, and I'm gonna see if he change), the MC in the Re monster is the best father i feel his father vibes that is my ideal father even though his parenting style is hilarious(allowing his children to fighting but he is raising them to be...
Lol at the first arc I kinda like it because he's the only live in there (yeah i love being alone) now the girls is forcing him to make bebe it's kinda sad that it's forced.
@Glomoro I think he's immortal but if you killed him then he can die but there's no way that he can die at old age or illness plus the MC have healthy body, my brain can't just think that if he's at old age and his appearance when he's at thousand years old with healthy body that's gonna be...