Naah spoiler
He had to go into hiding cos he killed someone. He's a psycho. The reason why the mom hates our ml is because he's the product of r3pe from the husband but his brother was killing animals and doing weird things as a kid whilst pushing it on the ml so everyone tot he was a monster including the mother. She finds out too late imo
Ohhh thank God he'll still get that title because that's what I'm thinking over. Tbh idc what the older bro does as long as it's guaranteed that our boi there get the title. Sad that he's a product of rape now I understand mom.
I'll bet that the older bro ran away cause he don't want to be the heir. Made a scene so his younger bro will immediately get the title and bid adieu. He's probably something like a scholar or a priest. Because in no way can anyone be given the title of an heir without a proper reason.