Based on a shounen gag manga by Masuda Kousuke serialised in Monthly Shounen Jump.

A new special episode that was distributed to those who purchase all three Blu-ray box sets of Sayonara Zetsubou Sensei series on January 31, 2012.

Taking place 700 years after the Dunbine TV Series, "The Tale of Neo Byston Well" revolves around Shion Zaba, the reincarnation of series protagonist Sho Zama. Together with Silkie Mau, Reml Jilfried (the reincarnation of Remile Luft), and the Aura Battler Silbine, Shion must stop a twisted Shot Weapon from launching a custom-made nuclear ICBM missile that's poised to wipe out the realm. "The Tale of Neo Byston Well" gained praise not only for its upgraded animation but also for using B-CLUB Magazine's popular AURA FANTASM series as the basis for the new Aura Battler designs.

Robot Girls Z+, the new Robot Girls Z anime, will be six monthly shorts that will debut next spring. The protagonists of Team Z will appear in the new shorts, along with the reformed Team G, Team LOD, Team Gou, and characters that first appeared in the franchise's online game. The new shorts' story will be based two classic "Toei Manga Matsuri" films, Great Mazinger tai Getter Robo (Great Mazinger Vs. Getter Robo) and Great Mazinger tai Getter Robo G - Kuuchuu Dai-Gekitotsu (Great Mazinger Vs. Getter Robo G - The Great Space Encounter).