The initiation ritual for joining the organization is painting your fingernails!

If nothing unexpected happened, Hanzō was probably already finished. It seemed they had come to recruit him largely because they valued his understanding of Konohagakure. But what exactly was their goal? What could make them set aside their hatred and come recruit someone like him, a man with a blood feud against them? Combined with what they had done to Konohagakure before, Danzo could at least be certain of one thing: they were Konohagakure's enemies. Hmph! How could a man like him, who did everything for Konohagakure, possibly...