Joushiki Shirazu no Saikyou Madoushi is a Manga/Manhwa/Manhua in english language, ACTION series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

In a world where there are monster nests called “labyrinths”, there lived a boy named Luke who spent his time alone in a labyrinth deep in the mountains. He studied magic from books his parents had left him. He mastered status magic, a requirement for admission to the Conqueror Academy (an institution that trains people to conquer labyrinths), and took the entrance exam, but Luke failed. With no other choice, he becomes a Freestyle Conquerors. Despite starting from adversity, he overcomes various difficulties with overwhelming power, rising to become the strongest Conquerors.