So Pls bear with me 😉
Sahir is someone I don't understand at all. All the previous 4Lions' heroes have had a past which made them the way they are - angry, 'khadoos' , bitter.
But Sahir stands out. It's true that he's also angry and khadoos and bitter, and spends majority of his time insulting and misunderstanding the FL...but there's something about him that makes him so endearing. Maybe it's because he's not violent towards Arzoo. There hasn't been even one instance when he has either pushed or gripped Arzoo angrily...unlike Arnav from IPK who I loved but also silently hated for mishandling Khushi so much.
Also, there is that aura of mystery around him. It's been 24 episodes and we are only just beginning to get an idea as to what the 'raaz' is.
I've got a feeling that he burned down the factory not because he's bad at heart but its somehow connected to his past. Maybe something terrible happened in that factory years ago and that's what has made him so heartless today.