DespicableYaoiLover's manga / #supernatural(3)

The story has so much potential but why does it focus so much on the side characters. To me it looks like the mc has become a side character, Although he is always mention and they get powers because of his book. Also the story gave so much unneccessary back story that nobody even ask for. This has so much potential if they only focus on the mc as much as they focus on the side characters.