Shionokami
Haven't started reading yet but I didn't know where to point this out. Your synopsis has a lot of grammatical errors, mostly run-on sentences. I rewrote it below, you can copy-paste it or use it as a reference to fix your synopsis: 40 years ago, our world believed that magic was merely a myth, a fiction, and nothing more. But that all changed when it was recently revealed that magic truly does exist to the public. To that end, a place was created, a place where magic can be studied and taught. And that place is Takamagahara Island, the home of a certain Kurokami Tatsuro: a young man who just wants to live his days with nary a trouble. That is until he has a fateful encounter one day, an encounter that would change not only his life but the entire world ...