Summary
Seto serves as the modern reincarnation of Priest Seto, a figure from ancient Egypt who was the cousin of Pharaoh Atem. He bears the name of the Egyptian deity Set. In his past life, Seto and Atem shared a complex bond characterized by both friendship and rivalry, akin to the dynamic seen between Yugi and Kaiba in the present day. They often tested their skills against one another to help each other grow. During their youth, their relationship was defined by their respective roles, with Atem living as a prince and Seto undergoing training as a priest.
