Souls

Souls are probably the most important thing in the Soul Eater series, and the centerpiece of the plot. It is the origin of all the characters' and is a manifestation of each character's personality, psyche and abilities. People with special types of soul can utilize different powers and abilities (e.g Maka's Grigori Soul enables her to fly). Souls can come in many different variations, differing in type and strength. Souls are important in the DWMA( also known as Shibusen) as Meisters can only wield Weapons that are compatible with each other's souls. The true power of Weapon and Meister can be exerted by them resonating their souls together, a Soul Resonance, which is a process of the Meister sending his/her Soul Wavelength into the Weapon, which sends back the Wavevlength to the Meister. This process is repeated until a single, even greater, Soul Wavelength is made, which enables them to use powerful attacks.

The importance of souls in the series is emphasized in the manga, in which the protagonist, Maka, utters the phrase, "A sound soul dwells in a sound mind and a sound body".