The Demon Great Sword (魔大剣, Madaiken) is the weapon transformation of Clay Sizemore.[1]


The Demon Great Sword is an elegantly crafted and slender longsword that features a solid black blade, surrounded in its entirety by a narrow white cutting-edge. However, the most unusual portion of this weapon is its hilt, which consists of a completely smooth cylindrical handle, attached by an unconventional arrangement of two small diamonds that form its guard.[1]

Special AbilitiesEdit

The sword possess little extraordinary abilities. The blade itself, however, is extremely sharp, able to easily penetrate the human flesh with little pressure[2] as well as easily cut through some of Shaula Gorgon's magic scorpion tails.[3] When swung by an strong Meister, the Demon Great Sword can generate strong wings.[4]

However, the downside of possessing the weapon is that the Demon Great Sword. As White Rabbit alludes, a Great Sword is difficult to use in tight spaces.[5]


  1. 1.0 1.1 Soul Eater NOT! Anime: Episode 3
  2. Soul Eater NOT! Chapter 4 (NOT!)
  3. Soul Eater NOT! Manga: Chapter 42
  4. Soul Eater NOT! Manga: Chapter 41
  5. Soul Eater Manga: Chapter 92