Pandora Hearts manga volume 15 features story and art by Jun Mochizuki.

With the Head-Hunter on the prowl during Oz Vessalius' second coming-of-age ceremony, madness surges through the grounds of Isla Yura's mansion, and the body count begins to rise. But when the tale of one sinful soul who entered into an illegal contract with the chain Humpty Dumpty in the void of Sablier is thrown back into the light, one of Oz's dearest friends will have fallen, and another will consumed by the dire reality of his being!