Chad was the most miserable because he was with the giants. He also got blacklisted for one year. Most importantly, he nearly died after taking a rageful punch from Montel.
How he survived was a miracle, but afterward, he had to spend his entire saving to recover and survived in the wilderness for a year.
It was also that time when this mysterious person approached him and offered him a job for protection because he was famous for his tracking skills.
But he had to sign a loyalty contract which was as good as a slave contract, and as long as he remained in the uncommon dark city, he can't hide or broke the contract.
In the end, Chad had no choice since he was in dire need of help, and most of the residents of the Dark City weren't willing to do business with him because of the Giants and his blacklisted status.
