Cmiiw
His ex husband bought/took him in from that brothel, and after he died Yuta took over the leadership position (?). The son in law treated Yuta like a toy bc he is technically his father's prostitute,, and bc he was supposed to take over his father's place as leader, if Yuta never joined the family.
Yuta have 2 goals. To bring the entire Kujo family down,, and to die whilst placing the guilt on Seunghyun. He's getting revenge for how the Kujo has trapped and tortured him,, and also to Seunghyun for abandoning him.
Yes but this could've shown before he takes action to take kujo down or whtv. Like not a single full flashback, it's so rushed and didn't make sense for the story. I thought we will have greater villain than fucking bum tetsu, turn out this clown was the main villain. Ugh.
I don't understand the plot like why he go with that son in law, what's his goal, what's his past with ex husband, none of that ever showed.