Deep beneath the imperial capital of Ragnus lies the Abandoned City, a slum where criminals and the poor crawl through life like vermin. Shin, a former noble swordsman, lost his family in a brutal power struggle. Stripped of everything and scorned as a 'failure of the ashes,' he hides a secret—he is the sole compatible wielder of the Ash Relic, the most reviled and feared artifact of all. Taken in by Alice, a cheerful young leader of a band of thieves, Shin's frozen heart slowly begins to thaw