True Name

"Who am I really? You will never know."

- Set Arkadia, upon his magic being found out True Name (真名, Shinna) is a rather ambiguous Caster Magic that utilizes a basic concept; hiding one's identity, history and true self from the world in order to achieve their goal, gaining power in return for their efforts, which would further them to their desires and ambitions. Due to its conditions to make the magic viable, True Name is considered rare in the modern day, being primarily taught by other users, or through scriptures left behind.

Trivia

 * True Name draws inspiration from The Study Case of Vanitas, as well as the Curses of Orsted from Mushoku Tensei.