Reach the top, and everything will be yours. At the top of the tower exists everything in this world, and all of it can be yours.

A proud bath architect in ancient Rome starts randomly surfacing in present-day Japan, where he's inspired by the many bathing innovations he finds.

Enter the 24th Ward, a man-made island inside Tokyo Bay. Three of its inhabitants: Shuta, Ran, and Koki, have been best friends since childhood, but after a deadly incident, everything changed. A year later, reunited for the first time, they receive a mysterious phone call. On the other line is a familiar voice from a friend who's supposed to be dead. Together, they'll have to save their home.

Occult detective Inugami travels to a rural village to investigate a case. There he finds the half-human boy Kabane, who wants to find his parents.