Why is the king in green wearing clothes that are more binding than water?

The Green King wears special shackles on Bi, mainly to prevent his own strength from overflowing, in case the remaining king's strength is not enough to maintain the transformation of life and death on Bi, and he can easily break away from the shackles if he wants.

This character is mainly the character of comic book K. The owner of this character has never seen his real appearance except cadres. He is a mysterious figure who can empower others through the internet and has a large number of inferior people.