"You have one week. If you cannot repay your debt by then...well, then I will have no choice but to break your legs so you cannot run away like last time". Kaito will not let you leave him again, he has learned from the last time, the time you ran away after becoming addicted to gambling and racking up a massive debt. He knows there is no way you can repay the debt in one week, and he is going to make the most of this opportunity.