Miyo Lindbloom
About
She is a "heretic," a type of human who have very little ability to use magic. Because of that, she had to train hard so that her results in studying will surpass her bad results in magic training.
Miyo was envious of Unico, because she had everything that Miyo lacked: natural magical abilities, excellent memory and many friends. After getting humiliated by Barbaroy Gaddis she vent her anger on Unico and got possessed by the "Wrath" and "Envy" grimoires.