I transmigrated to Taisho-era Japan, and from the start, I was in the Infinity Castle, the lair of the Demon King Muzan!
My name is Zuo Fan. I'm a die-hard materialist and a martial arts fanatic. Looking at the bunch of "edgy youngsters" in front of me, dressed in strange outfits and wearing smoky eye makeup, along with the sickly-looking "big shot" they were fawning over, I thought I'd stumbled into some kind of immersive murder-mystery game.
Since I was already there, I went over and flirted with the most gorgeous girl beside the "big shot." "Hey, gorgeous, would you mind showing me the way to your heart?"
The next second, the beauty turned into a demon and lunged at me!
With my life hanging by a thread, the [Righteous Path of Humanity: Zuo Qianhu Template] activated!
I discovered that as long as I didn't believe in ghosts and gods, my fists were harder than a Nichirin Blade! As long as I stayed committed to science, my righteous spirit was more powerful than sunlight!
On the Mugen Train, Upper Rank Three Akaza appeared, and Flame Hashira Kyojuro was on the verge of death.
I kicked Akaza over. "Stop! Superstitious brawling is prohibited! The strong are born to protect the weak. What is this, Social Darwinism?"
Kyojuro survived, Akaza was stunned, and the whole world fell silent.
From then on, the Demon Slayer Corps took a completely unexpected turn.
At the Hashira Meeting, I taught the Hashira historical materialism and had them swear to believe in no ghosts or gods, so that their blades would naturally become divine.
Gyomei Himejima tapped his wooden fish and muttered, "All reactionaries are paper tigers."
In the final battle, Muzan tried to split up and flee.
I pinned him down. "You can proliferate your cells without limit and still think you can run? You're nothing but an uncontrollable mass of cancer cells! Today, in the name of science, I will subject you to
