Koyomi finishes hearing the story about 400 years ago from Shinobu. Yotsugi joins them at the spot, and Mayoi wakes up from her slumber. The four of them were talking within the cram school ruins, but the darkness appears a second time at that location.
monogatari-ep-16Monogatari Season 3 Episode 16
Monogatari Season 3 Episode 16
[47] Onimonogatari [3] Shinobu Time – Part 3