As Everyone Knows, Upper Moon Zero Is Human

[Important! This story will be published on January 5. Three chapters will be released that day, and the regular update time is 8 p.m. Thank you for your support!]

After I bound to the System, I came back to life. Doing tasks is just like working a job. My heart won't be moved, it absolutely won't.

Thanks for asking. I'm in the Warring States period, just past the Heian era. I might make it to Edo, Taisho, and Reiwa in the future. Everyone I've won over says I'm great.

Wait, why did all the people I won over end up becoming my bosses and coworkers?

Hold on. Is it really reasonable for a human like me to work at a company full of demons?

When he was walking down the street, someone called his name, and a swordsman dressed in black chased him down, brandishing a flashy sword and trying to cut him apart. Back at the office, his coworkers with their cheat abilities were a handful. They kept trying to challenge him, a guy with no healing abilities, to a switch-position, blood-for-blood battle.

After sheathing his sword, he sat on his coworker's head and lit a cigarette. Upper Moon Zero looked at the flags he'd raised in the past and fell into deep thought.

As he said, everyone from the boss down to a certain Lower Moon at the Twelve Kizuki Company was someone Zero had once won over.

What white-moonlight first loves? What childhood engagements? What nights spent with an ice-cold divine son? Zero solemnly declared that none of it was clickbait.

Oh, right. His coworker, Third Brother, was never part of the people he won over. Don't ask. The System ships Third Brother's divine romance too.

*

The couple is set: the boss.

A cheerful (?) happy ending.

Timeline: Heian-Warring States-Edo-Taisho-Modern day

The Heian arc will probably be a Crossover with the bald-headed dad who makes people's heads ache. In the Warring States arc, they'll kill demons and gods together. The Edo and Taisho arcs will be the main Demon Slayer sections. The modern-day arc will have lots of settings, and I'll add more as ideas come to me.

Here's the next story:

[Crossover] On the Compatibility of Demons and a Modern AU

Shiina Ryo knows very well that he has transmigrated. In the rift during the transmigration, he seems to have merged with something extraordinary.

Overnight, he went from a three-dimensional person to a two-dimensional character on a page, and his life plans were spun around like a joke.

In this rather abnormal Reiwa era, you can see:

The Child Cult Leader, whose progress toward eternal paradise was derailed by compulsory education.

A bunch of Yokohama literary greats who never do their jobs.

The child detective who works tirelessly to uphold his scientific worldview.

The world's strongest teacher, who will never go out of character.

Every now and then, he even returns to his original world, which might have been censored before it was ever animated.

So the Demon of Demons was created just to give him and his love interest a happy ending, right? Damn it!

*

Demons are born from people's fear of something. The more people fear the thing named in a demon's title, the stronger that demon becomes.

Humans possessed by demons become fiends. Some humans also make contracts with demons and gain a portion of their powers. These people are known as [Devil Hunters].

All right, you can forget those rules now. This modern AU doesn't seem to be a Crossover with Chainsaw Man after all.

It's really not a Crossover? This is a scam against the readers!

The main settings are various modern-day universes, including Bungo Stray Dogs, Detective Conan, Jujutsu Kaisen, and Katekyo Hitman Reborn, as well as my version of Demon Slayer reincarnations and the Demon Slayer Academy AU.

Later, the story will move into canon settings, including the Taisho-era Demon Slayer arc, the Chainsaw Man arc, and various settings that don't fit into a modern-day Crossover.

This is a story where I'm letting myself go. The author has gone crazy after reading Chainsaw Man! Crazy!

The protagonist has a human soul fused with a demon and, just like the title suggests, belongs to the Chaotic Neutral alignment.

The love interest is probably Douma.

The cult leader is so hot. I am so into him.

Theme: A story of mutual salvation