Look up “pearling” or “genital beading”. It's something they do in prison and it's definitely not a pricing and definitely is a piercing. I learned about it in “Big Apple” when reading it. It's pretty good although there is rape, but if you're reading this, you won't be upset by that lol.
I read this manhwa thinking it would ease my stress but instead it gave me more STRESS. Like every few chapters after they finish a fight, there would be another AND IT GIVES ME ANXIETY TO THINK THAT MAYBE ONE OF MY FAV CHARACTERS WILL DIE HUHUHU
Damn, the baby won't have milk