Warlock x Holmes

is a Japanese light novel series written by Sadato Taube, with illustrations by Yoshie Kato. The series began publication on May 9, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Ten years after the disappearance of magic from the world-Sherlock Holmes, the magic detective (Warlock) who sealed the magic that once existed all over the world and ended the war, is a partner who turns into a weapon (trans) = I was following the case of Jack the Ripper, which continues in London with John Watson, a multi-variant magical weapon (Magus).

The two find out that Baron Gruner, who is planning to overthrow the nation, and Moriarty, the magic stone king who is planning to revive the magic, are involved in the back of this case ...!?

An unprecedented and amazing place! An adventure by Holmes x Watson combination begins in England, a fantasy world!