It's been Thousands of years since the start of the war of 'Humans vs Sorcerers.' . Tsukasa Tenma is a prince that is a human, and it's his 18th birthday, his parents finally decided he's allowed to go to the forest alone..

but then, he injured himself, he knew if he yelled out for help, a sorcerer could kill him.. so he continued walking even if he was in pain.