It may be time for him to refuse. Until then, he just wanted to, but was afraid to take action. All the reasons are because they are worried about their mother's safety. If asked if he was afraid that he would be hurt, Chanin might be full of fear. But now he has nothing to lose.
Running away, dead, dead, he chose to fight rather than do anything, even if he struggled like a dog.
While Alan is playing games with him, he is also playing games with each other. Chanin put his life on his mother, and if he wants to lose all his money in this second, he...