Grimoire no Niwa

Synopsis

One day, Atli found a book of prohibited magic in his room. When his rival, Leon, died before his eyes, Atli was forced to use the book to resurrect him. The use of such forbidden magic is the greatest crime in this world. And it is this taboo that drags Atli and Leon to a cruel fate. (Source: M&C! Comics - translated by Anime News Network)