Eikoku Gensoupu Jouki-tan

is a Japanese light novel series written by Aoi Shirasame, with illustrations by Shia. The series began publication on July 17, 2019 by ASCII Media Works under their Dengeki no Shin Bungei publishing imprint.

Synopsis
At the end of the 19th century, a dramatic development of civilization was achieved by the Second Industrial Revolution, commonly known as the "Steam Engine Revolution," in which highly developed steam engines swept the world. It's always a hassle to fly under the Far Eastern man Tsukagami Dobari and the alchemist Vincent, who run a contractor in London, the capital of the British Empire.

What is the true identity of "The Revenant, the Steel Monster" that appears one after another in front of two people who are chasing the urban legend that is colored in chaos and swirls in London?

This is an illusion of steel and steam woven by truth.