Something anime only for now but could be made cannon.
The reason why Shiryu said “sorry for cutting you” and with other translations “I had the right to cut you”, and why his sword glowed red is because his sword is so cursed that it decides who to cut, he literally cannot help it. That’s why with the jailers it glowed red, whereas with BB blue. A cursed sword that enacts your true desire, hope this is true.
I’m in.