@Book
Spoiler!
He became soft when he fell in-love so bad with Ryu So-Wol ( Blue Spirit). Still Cruel and heartless af as an enemy but he changed so much as a person/leader especially if you're one of his people. Well, he's not that evil like we think of him about what he's like in his first life. He's evil self manifested when his closest aid betrayed him because he fell in-love with a mere human and the reason why that human, So-Wol, died hundred years ago before his very eyes along with the Moon Vein clan.
I don't care about your taste!