@Arey_490
- About your first question, yes you can make male Kana your male Corrins son. They can support with each other (Kana-->Corrin, Kana--> mother) but they will have empty support conversations. It isn't possible to have the male my unit father having the female my unit support dialogues for kana by hex editing.
- About your second question:
Just change the value on the parents address with the parents you want just like you did with Kana. This can be done by hex editing. I added a Nina with Niles as father (0x20) and Male my unit as mother (0x01) as an example. And another Nina with Male my unit as father and Niles as mother.
Thing like supports and class sets will be done automaticity. (like my, hacked Ike son, Sihgure, has vanguard in his class set, even he never used a vanguard seal)
Note about supports: Supports could be a bit weird, as well as support bonuses. Support dialogues will only be possible with the original possible parents. If you assign another parent, then you will have an empty support dialogue, however they can still grow in support rank.
As for the Nina's in attachment, in the MaleMyUnit_Mother version, because Male my unit already have standard dialogues in the game, and he is father of a child he normally shouldn't be, Male my unit possibly could S-support with her. I haven't tested, but like I mentioned before, supports could act a bit weird. As for the Niles as mother version, I suspect that the support dialogues for Niles and Nina would be empty ones. There are support dialogues with her as a father, but now the avatar is the father, so the dialogues could be empty.