How????
its just a joke bc he was seen cradling his kid at the end even if he didn't realize it was his kid. which is somehow more than his other kids bc it seems bro came and went, literally lmfao. none of his kids have any memory with him, so to see that he accidently was with one of his kids spending him holding him, is surprising
Sorry to disappoint you, but I don't think it really happened, it was the what if he was wishing for
Oh that didn't happen...it's just what issac wanted
i'm sad he didnt fuck the demon lord, but also he's kind of a caring dad by accident (????)