Also known as: 雷神刀
The divine lighting Katana wielded by Ryoma from Fire Emblem Fates. Its previous wielder was Sumeragi, and it is eventually passed on to Shiro.
Raijintou takes its name from the Kami of Lightning, Raijin.
Its fellow legendary weapons are Fujin Yumi (Fire Emblem), Siegfried and Brynhildr.