Are you ashamed of having a dirty tattoo? In Japan, there was a punishment called "tattoo punishment" during the Edo period, so tattoos have a deep connection with criminals. Since Yakuza gangsters liked to tattoo, that image will not disappear even in recent years. Furthermore, in some countries overseas, there is a punishment where prisoners are forced to tattoo themselves, and it is said that the crimes they have committed can be determined by looking at their tattoos12. It is thought that the tattoo culture of the Edo period had the aim of preventing crime by using tattoos as evidence of criminality and as a deterrent "brand."