The PV for Tsutomu Nihei's "Tower Dungeon" has been released.

From “Tower Dungeon” PV
This is to commemorate the release of the latest 6th volume of "Tower Dungeon". In the PV, the manga part was done by Maxilla and the anime part by Studio Kiel, maximizing the world view of "Tower Dungeon".
"Tower Dungeon" is the latest work by Nihei, known for works such as "Knights of Sidonia" and "Doll Country." It is a fantasy story about exploring the dragon tower, a gigantic structure floating in the sky, and is currently being serialized in Monthly Shonen Sirius (Kodansha).