Dowl Masters 04

is the fourth volume of the Dowl Masters light novel series, written by Tsutomu Sato and Illustrated by tarou2. It was released under the Dengeki Bunko Imprint in July 2016.

Synopsis
A near-future robot action set in space, drawn by Tsutomu Sato of "The Irregular at Magic High School"!

Ryuichi, who engaged the Sophia army in the Timor Sea, knocked down his former superior Mayuri-Curtis and brought victory to Genomes. Aoi, who is unaware of the identity of his enemy plane, and Ryuichi, who is aware of the truth of his own battle results. It was a moment when there was a big gap between them that I could never turn back.

Ryuichi's ability to perfectly use the state-of-the-art Dowl, the azure-colored "McLille", finally summons "Varna" driven by one of Sophia's strongest exer groups, Anil-da Costa. In both Dowl, his specialty is the battlefield underwater. Two giant humanoid weapons collide in the Norwegian Sea at a depth of about 1,000 meters! And the stage moves to space. Reion's Misty Moon heads to the battlefield to eliminate the Genomes army that suddenly attacks Indra of Aoi and Iron Maiden of Shuri, but an unexpected Doul stands in front of her ...!

(source: Dengeki Bunko Official Website - Translated)