The eighth part of the Monogatari Series. Includes the story Mayoi Jiangshi, protagonized by an adult version of Hachikuji Mayoi in a future where she lived due to Araragi Koyomi and Oshino Shinobu's interference, but as a consequence of that, the former died and allowed a berserk Kiss-shot Acerola-orion Heart-under-blade to cause an apocalypse.
This tag implicates monogatari_(series) (learn more).