Here, I made a handy graph to explain this phenomenon
View attachment 77534
The only one that occurs to me is Nerissa, though she'll probably graduate before having a child and she will wait until her kid is old enough
To be honest aside from that one old-school Nijisanji guy who's open about being a dad (his name escapes me) I don't see any big-name vtubers acknowledging their past to their kids until they're well into their teen years
Can you imagine being the child of a famous vtuber and your classmates find out? It'd be only SLIGHTLY better than your classmates finding your mom's OnlyFans
I feel bad for today's youth, because that's definitely happening