Lucas was never a main character. That title always belonged to his best friend: brave, handsome, popular Nolan. Transported to another world of angels, demons, humans, and fairies on the edge of war, they find themselves on opposing sides as Monthly Sages.
Now, Lucas takes up the mantle of protagonist. Inheriting the title of Lord August, it's up to him to decide how he wants to live in this new, unfamiliar world.