Reborn In Wednesday [TV show]

The MC is reborn into the world of the Wednesday TV series. While he’s only heard of the show and doesn’t fully know its events or characters, he wields the powers of a Darkfey and a skilled magic user. Armed with a mysterious grimoire that grants him the ability to learn and master spells from across the multiverse, he enters Nevermore Academy with limitless potential—and the unknown dangers of his new reality. — Description from novelcodex.org