Aria Mizuki is not just a quiet student at Minamigawa High-she is a conduit of suffering, cursed to harvest pain in exchange for the power that keeps her alive. Within a hidden dimension known as the Black Cage, she shapes torment into ritual, and silence into strength. But as her power grows,...

Haruki Sato has always found solace in solitude. Quiet, unassuming, and invisible to most, he drifts through his final year of high school in the background, where he prefers to stay. But his world shifts the day Aki Fujiwara enters his classroom-a girl who, like him, seems to disappear in a crow...