Soul possession (魂憑依, Tamashī Hyōi) is a special ability related to taking possesson of souls.
Working in opposite of the soul resonance, soul possession instead allows the weapon to possess their meister of choice (even by force) and take over their soul. The end result allows the weapon with soul possession to devour their meister's soul. However, it is possible to defeat the technique by using other wavelength control techniques, as a weapon cannot control two soul wavelengths at one time.
- ↑ 1.0 1.1 1.2 1.3 Soul Eater Manga: Chapter 7
- ↑ Soul Eater Manga: Chapter 7; Tsubaki: Usually the Meister and the Weapon match their "Soul Wavelengths" and become one, right? But when it comes to the Uncanny Sword, it takes over the person's soul and controls him.