Red blade

Once a demon slayer has awakened the mark, they are gifted with superhuman physical abilities along with access to the Transparent World and Bright Red Nichirin Sword

Transparent world

An Ability Attained by Demon Slayers that Allows them to see the insides of a Person and also See in Slow Motion

Slayer mark

Each Demon Slayer possesses a unique pattern to their Mark which appear to be based on the Breathing Style they utilize; the only known exceptions are Tanjiro Kamado, Yoriichi Tsugikuni, and Kokushibo, all three of which have Demon Slayer Marks resembling flames that manifest on the left side of their foreheads.Enhanced Physical Capabilities: Upon awakening the Mark, the physical strength and speed of the bearer is exponentially increased to the point where Hashira or Hashira-level Demon Slayers are able to overpower and defeat the lowest of the Upper Ranks and fight on equal ground and grow in power