The Martial Unity

Months passed as Rui began working on the domain technique. He took his time studying the esoteric flora of the Valley of Prisms, breaking down the manner in which the optical density of light was altered and how the changes in optical density affected the passage of light.

Simultaneously, he began trying to replicate those effects with heaven-bending. It wasn't easy. However, the foundation that he had gotten from Master Gurren was quite solid. On top of that, he also had experience with manipulating the optical density of the air in other ways when he created the telescopic technique for Master Gurren.

Unfortunately, the heaven-bending needed to magnify light was extremely different from the heaven-bending needed to halt light in its path. It was challenging, but he worked hard in trying to figure out the most efficient and effective way to make light opaque.

Even turning the air into a solid through heavy compression was not enough. In many cases, this simply yielded a translucent and even transparent medium through which light had no trouble passing through.

While he worked on the opaqueness of the domain, he also fleshed out its other aspects that were to aid hypnosis. Those, though, were much easier to handle.

One thing that became extremely evident was that this technique did not necessitate tremendous exertion of power. Since the purpose of the technique was to block sensory information, it was not a physical combat technique like many of the other domain techniques of the Yggdrasil System.

That was great because it made it easier to employ while fighting. At the current moment, he had only begun to endeavor passive mastery of domains so that he would be able to seamlessly use them in combat without letting them hamper him.

Thankfully, this technique would come with passive mastery pre-loaded into it due to how little of a burden it would be to execute.

Kane lamented ever springing the idea in Rui's head inadvertently as Rui made him sit in the center of the domain to report how well the it impeded sensory input and how much it had improved since the previous prototype. He essentially became a glorified senso to allow Rui to record observations.

"Commencing trial number S38-174. The aim of this trial is to measure the impact of a one-point-eight-percent increase in the density of air

in

the past few months, Rui had been conducting relentless trials in various heaven-bending approaches in his endeavor to create a domain. He applied an approach similar to most rigorous R&D

of regret in joining Rui to find the Divine Doctor in the Beast

BADUMP!

a surge of power emerged from deep

go," he murmured, activating a powerful breathing technique, bending the vectors generated by his breathing to manipulate the entire atmosphere, causing air to spirally

dimmed significantly as he carefully paid attention to

definitely a little darker than

"How much darker?"

percent maybe? Around that

in his mental journal as he began altering the domain technique to include

this going to take?" Kane arched an eyebrow. "Because we can't spend forever in the Valley of Prisms,

anytime soon," Rui

not going to find the Divine Doctor

We probably won't have to spend tons of time per region from here on out.

Kane shrugged. "Your choice."