JGS decides he wants JC (because boy is beautiful, just like his mother), and blackmails JC into it to protect WWX. Every time WWX does something that pisses JGS off, he takes it out on JC. (Bonus points if it's particularly bad after WWX fucks off with the Wens, JC gets badly injured, and WWX finds out somehow- maybe LWJ sees JC getting brought back to his rooms afterwards?)