Can someone tell me if Karhan's brother dead or still alive?

That bitch is still alive unfortunately.

Is he a bad guy? (I'm sorry it's been so long since I've read (￣∇￣")

Yes. He's the reason why Karhan is ostracized if I remember. He manipulates others and makes Karhan have a reputation of a psycho that's why their mother was disgusted at Karhan.

Ohh, I just hope he will not be an obstacle to our MC's like him getting interested with FL then their family will support him pushing Karhan to let go for his brother sake.