In a world where “Hunters” conquer “Ruins” that appeared from another realm, seeking treasures within…
Kurogane Touma, a dropout and failure, risks his life challenging an ultra-high difficulty dungeon to save his sister, who suffers from a terrible illness.
What awaits him there is an encounter with the strongest sword—and “Aion,” a supernatural entity that devours love.
The battle to save his sister and the world begins!