The Heavens: One World, One Superpower

Ultraviolet lamps really can ward off evil spirits.

This news excited Su Chen.

If the Demon Slayer Corps were equipped with ultraviolet lamps, casualties could be greatly reduced.

Furthermore, with the aid of large-scale ultraviolet lamps, one can set a trap to catch the evil spirits and severely damage their forces.

Immediately.

Su Chen wrote a second letter.

This message was passed on to Urokodaki Sakonji.

Then, through Urokodaki Sakonji's hands, it reached Ubuyashiki Kagaya's ears.

The words of a former Water Pillar are more valuable than those of someone who failed to pass the final selection of Fujisaki Mountain.

Send the letter.

He glanced at the ultraviolet light.

I couldn't help but have some doubts.

"With the advancement of technology, we have moved from the agricultural era to the industrial era. If we do not know how to use technology to serve ourselves, then we will be stuck in the past."

"The Ubuyashiki family has been fighting demons for a thousand years, and their thinking has become rigid. They only place their hopes on breathing techniques."

"In a few decades, the atomic bomb will be invented. If we give Muzan one, he'll probably be reduced to ashes on the spot."

He thought of Muzan Kibutsuji.

A cold smile played on his lips.

He held this progenitor of demons in utter contempt.

"Muzan has lived for over a thousand years, his brain must be completely fried."

"With such formidable combat power and such alluring abilities, how could he have been entangled with the Demon Slayer Corps for a thousand years?"

"This is truly unbelievable."

"If I were Muzan, I would be secretly transformed into a demon by those in power."

"I will use the power of the entire country; what will become of the Ubuyashiki family?"

"No wonder there's a saying, 'To be old and not die is to be a thief.' It's about having a rigid mindset and not being able to broaden one's perspective."

"Since we can't find the blue spider lily, let's just turn everyone in the country into ghosts."

"Wouldn't it be great if everyone changed from working at sunrise and resting at sunset to working at sunset and resting at sunrise?"

Of course, that's what he thought too.

I feel that this world is not as simple as just demons fighting against the Demon Slayer Corps.

Firstly, if the breathing technique is so miraculous, could it be that before Yoriichi Tsugikuni, no one had ever discovered the breathing technique and utilized the power of heaven and earth?

Secondly, was the doctor who treated Muzan really just an ordinary doctor? He could invent drugs that could turn people into demons; is it possible that he himself had already become the ultimate being?

Thirdly, the Ubuyashiki family discovered that most of their children had died young, so they consulted the high priest. The high priest pointed out that someone in the family had transformed into a demon, and that the demon must be slain to break the curse. Does the high priest's statement suggest that there have been similar cases in the past?

Fourthly, since heaven and earth give birth to yin and yang, and there are evil ghosts, are there righteous gods?

These are all unsolved mysteries.

Perhaps the Ubuyashiki family knows some secrets.

"I'd better keep a low profile until I have the power to completely subdue the world."

"Who knows if there are other mysterious forces lurking behind Muzan?"

"I always felt that the doctor didn't die so simply back then."

"After all, where did his pharmacy come from? The Blue Spider Lily is such a rare medicine. If it weren't for a long-standing medical tradition, I would never believe that one person could discover it on their own."

"After all, Muzan couldn't find it even after a thousand years, yet he, an ordinary person, encountered it in just a few decades and knew its effects?"

Su Chen expressed doubts.

However, knowing the function of ultraviolet lamps will greatly help the Demon Slayer Corps in dealing with evil spirits.

This can be considered as him repaying Urokodaki Sakonji for saving his life.

Although he can also kill evil spirits.

But killing evil spirits was not his primary objective.

He simply wanted to cultivate his strength to a level that was unprecedented and unparalleled.