Pandora Hearts manga volume 5 features story and art by Jun Mochizuki.

Guided by Jack Vesalius, the man from Alice's memories, Oz wanders back into the world of lost memories in search of Alice. There, he stumbles upon the devastating tragedy of Sablier, the century old disaster, which sent the old capital into the Abyss, an incident of which no one has any recollection - except Alice!