On Christmas Eve, he finds out his parents have run away from home while shouldering him with a massive ¥156,804,000 debt. The Yakuza (from whom the money was borrowed in the first place) plan to settle the debt by selling his organs and various other illegal means such as selling him away as a slave.
On Christmas Eve, he discovers his parents have fled home while burdened with a substantial ¥156,804,000 debt. The Yakuza (from whom the money was borrowed initially) intend to settle the debt by selling his organs and through illegal methods such as trafficking him into slavery.