Why does the world show a health bar? !

Here's the revised translation, with all non-English words replaced by their closest English equivalents and removed:

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Poison is used to kill humans.

Humans are flesh and blood. They bleed, tire, and feel pain. From a demon's perspective, the human body is incredibly fragile.

"All I need to do is coat my hands with poison, and I can reap a bountiful harvest. Human creations are truly marvelous—not just poison. I remember seeing a train in Tokyo. With a rumbling sound, the train approached, and I was in awe. I thought, 'Humans can create such steel beasts.'"

The demon recounted its story, seemingly delighted to do so. It enjoyed the feeling of control, leisurely narrating its tale to its soon-to-be victim.

—It felt so good.

"Why should I care about your thoughts?"

Li Mo stepped forward, fully activating his breathing technique. His body's机能 (functions) reached a heightened state. He moved faster and struck harder than before.

The demon wasn't his match. Li Mo didn't know what kind of poison this was, but he could turn the demon into pulp before it took effect.

"Run."

This word was directed at the two girls. If Kanae and Shinobu stayed, they would only be a liability. Li Mo couldn't guarantee he could spare the focus to protect them.

This time, Kanae acted decisively. Seizing the opportunity, she grabbed her sister and ran toward the door.

The demon shouted, "Hey, hey! Don't run away! I'm still looking forward to eating you! Not you, though, man. You hit really hard. I'll make sure to vent my anger when I eat you!"

"Do you think you're funny?"

Breathing, cycling.

More oxygen was inhaled, more energy was generated, and his blood flowed faster. Li Mo's breathing technique wasn't refined enough to control blood vessels and slow the spread of the poison.

"If you keep moving like this, the poison will spread faster. Although it's not a fatal poison, just a paralyzing one, by the time it takes effect, you won't die from the poison, but you'll be unable to move and watch as I eat you alive."

"Do you know how bears eat humans? They first slap their prey to incapacitate it, then eat it alive while it's still conscious. That's right—I love doing that."

Disgusting words.

To the demon, humans were merely food. It used various methods to make its meals more enjoyable.

—Li Mo understood the underlying message. It wanted him to feel fear.

A normal person would despair at such a cruel fate. The thought of being eaten alive while fully conscious was horrifying.

Li Mo didn't like that.

So, he would ensure that future never came to pass.

Flames danced in the room. Li Mo wielded the axe like a blade, unleashing the twelve forms of Sun Breathing in a seamless cycle. His attacks were relentless and impenetrable.

The demon's body was constantly being cut, sliced, and mangled. It regenerated repeatedly, but its health bar continued to drop.

"This is useless. Even if you sacrifice your life to let those girls escape, what good will it do? Will they wake up the villagers? What use are they? Once the poison spreads, you'll still die."

"Are you annoying? You keep talking and talking, trying to assert your presence? Are you scared? I can feel you growing weaker."

In this world, words could deceive, actions could deceive, but the health bar never lied.

Li Mo's response froze the demon's smile for a moment. It muttered, "What are you saying? Trying to comfort yourself? But it's just that."

"Look, your movements are slowing down. The poison is spreading. How much longer can your body hold out?"

"Ah, you're going to die."

The one who couldn't fight back spoke arrogantly. Relying on its immortality, it mocked the human before it.

The more it acted like this, the calmer Li Mo became. He could sense that the demon was a paper tiger, putting on a brave front.

"You were chased here by the Demon Slayer Corps, weren't you?"

The demon's smile faltered. The next second, its chest was sliced open.

It could no longer taunt as it had before. Its expression twisted as it said, "What are you talking about?"

"Looks like I guessed right. You're really weak."

Li Mo watched the demon's health bar. With each regeneration, its health dropped faster. It wasn't far from zero.

Li Mo remembered when he first arrived. The demon had been eating a corpse, and its health bar hadn't been full then either.

It was weak.

So weak that after ambushing and killing the Butterfly couple, it didn't immediately kill the remaining humans but instead started eating.

It was a low-health monster.

Why was it talking so much?

Because it was weak. It needed to buy time, knowing that if Li Mo cut it into pieces too many times, slowing its regeneration, it would be in danger.

What was it so afraid of?

What had brought it to this state?

What had brought the Demon Slayer Corps here?

"You're afraid that if too much time passes, the Demon Slayer Corps will return, right?"

Li Mo spoke, disrupting his breathing technique. But it didn't matter—his stamina was enough to keep suppressing the demon.

The demon's health bar continued to drop. There was no better news than that.

"Yes, that's right. I was chased all the way here by the Demon Slayer Corps. But so what? They're still playing hide-and-seek with me in the mountains. They won't show up now."

"You're still going to die."

The demon spat venomous words. Having its scars ripped open caused it psychological pain, driving it to madness. It described in the most vicious terms what Li Mo would soon experience.

There was no other reason.

The demon couldn't fight back.

It wasn't a combat-specialized demon. Even with its strength and speed, its will to fight was weak.

Demons weren't perpetual motion machines. They could hunger and needed flesh to fill their bellies. Human flesh was the best—it not only satisfied their hunger but also made them stronger. If they couldn't find humans, they could eat beasts.

"I know what to do."

All he had to do was drain its health bar, rendering it immobile. Wait, he should have left someone alive. If he passed out from the poison and the demon ate flesh to revive, how would he last until sunrise?

—Forget it.

Li Mo didn't want to think about that. He just wanted to turn the demon into mush.

Look, its health was already at the execution threshold. He only needed to do one thing.

Sun Breathing had a thirteenth form.

Combining the previous twelve forms into an impenetrable attack was the thirteenth form. It was created by Yoriichi Tsugikuni the moment he saw Muzan Kibutsuji.

It was a form specifically designed to counter Muzan.

Li Mo's earlier attacks had chained the twelve forms together, but they were executed in sequence without synergy. The difference was like playing twelve cards over twelve turns versus playing them as a straight in one turn.

To incapacitate the demon, he needed to use the thirteenth form. Could he do it?

Yes, he could.

In one moment, he would maximize the damage.

Li Mo clenched his teeth, air escaping from his lips.

Breathing—

Swinging—

In that instant, Li Mo understood why the Kamado family had passed down Sun Breathing as a sacred dance through generations.

It was beautiful.

Like a spirit dancing.

When the twelve forms flowed seamlessly into one, it was as beautiful as a celestial being.

Beautiful, yet deadly.

Muzan Kibutsuji had seven hearts and five brains. The thirteenth form of Sun Breathing was born to kill such a demon king.

What about this nameless demon?

It had only one heart and one brain.

Even though the wielder wasn't Yoriichi Tsugikuni, and the weapon was an ordinary axe instead of a Nichirin Blade, it was enough.

The demon's head flew off, its arms were severed, its legs were cut, its chest was split open, flesh scattered, organs divided… For a moment, there was no intact part of its body.

After doing all this, Li Mo collapsed to the ground. Executing the thirteenth form at full power had drained him. The poison spread, and his body felt stiff, as if injected with an anesthetic.

"It seems… I've won… If I eat your flesh, I can fully recover."

The demon's head stammered.

From Li Mo's perspective, its health bar was almost empty, with only a sliver remaining. The demon's特性 (trait) kept it alive.

Health lock was truly disgusting.

"You can try," Li Mo said, sitting on the floor. He could see the demon's head, half-sliced off, unable to roll. It could only wiggle slowly using its hair.

Time stretched infinitely.

The walls were on the verge of collapse. All it needed was one final straw.

"It seems, Mr. Li, I've returned just in time."

The girl, Kanae Kocho, appeared at the doorway, smiling.

The final straw had arrived.