The legends of Echigo Province, or present-day Niigata Prefecture, include: Raijin (god of thunder); Fujin (god of wind); a big serpent; Nekomata (cat monster); and Reigan (spiritual goose).

where they discovered the electrifying Japanese god of lightning, thunder, and storms, Raijin, who was captured by Noritake ...

This is where the similarities with Minato's Flying Raijin are, as Minato used marked ... he did not invent the Flying Thunder God on his own. His master, the Second Hokage Tobirama Senju, is ...