Koyomi Araragi is hit with a sudden realization—there were two snakes wrapped around Nadeko Sengoku's body.

The ceremony is incomplete, and Nadeko's life hangs in the balance, but can Koyomi take on an all-powerful serpentine god?

And as the story moves forward, Koyomi looks back at his first encounter with an aberration to reveal his “tale of wounds”…