Welp... from what I remember... basically old bro is a psychopath manipulative pos... that made it so Karhan is the one blamed instead of him. Like, sick things like offed animals in front of the door to the mom's room and sheet like that and manipulated them to think it was Karhan that did it. And he getting withdrawn and going to battlefields didn't help...
Yup and the poor excuse of his mother turns a blind eye even when something doesn’t fit and still goes into self preservation mode dumping everything on our poor baby …. She practically hypnotizes herself to believe she isn’t wrong even when the FL points out the inconsistency….. god I want to strangle that fucking psycho of a brother… and their father is even worse POS ヽ(`Д´)ノ

Does anyone have any nformation/spoilers why the mom started ignoring and neglecting our poor baby Karhan?