Minor? Canning is hardcore, it basically aimed at the exact spot in full strength and it will split open your ass cheek horizontally that even a masochist will yell stop. It’s a severe punishment for severe crime, one level lower than death sentence, where after each session you wouldn’t be able to walk and sit for weeks.
20 strokes will likely split into somewhere between 5 or 6 sessions over the year of imprisonment
They mentioned IP right, and since Japanese police do arrest and charge people for infringing copyright, and since some artist do recognize their work being smashed together to create something else, they might skip this thing for the foreseeable future just to be on the safe side. They know because they’re the one that send police to arrest people.