Responses
Pain isn't probably the only reason, in this manga they're the last pair so their very rare, since they're so rare if their secret got out, wouldn't there be people searching for them? if they had a kid in the hospital wouldn't the nurses and docter get confused and spread rumors?
I'm not saying they should be extinct, but if their child is a omega or alpha, wouldn't their child be tested too?
(if it doesn't make sense then you can correct me, I'm not really good at wording.)
Ugh I hate the sister mad fucking annoying I wanted to them to have a kid#-.-)