Kizu

In the world of KIZU, some people are born with an invisible scar created by demons from the Demon Realm. During awakening, usually between ages 15 and 20 or near death, the scar can manifest extraordinary abilities, but half of those who awaken die. A boy is dragged into the world of KIZU and must survive long enough to become strong enough to protect his sister. The Fujimoto clan, once one of the most feared clans of the Juzoku era because of its godlike KIZU abilities, was wiped out by ten rival clans who feared its power.