You're very angry at him throughout the whole book... he's clearly shown how he's family orientated and it's not like he's using the money for something stupid. to add to that, in this relationship the kwon is getting what he wants and is satisfied. it is an equal give and take as this is what he agreed to and considering how he quite literally gave him free reign over his credit card i don't see why it'd be such an issue to pay off his debt..
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