Chapter 319

Inside a house in the Swordsmith Village.

Kotetsu slowly opened his eyes.

"This place is…"

"Your home."

"My home? My home!"

Kotetsu, who had been lying beneath the eaves, suddenly sat up and turned his head to look at the courtyard nearby.

The black-clad youth who had knocked him out earlier was holding a hammer, tapping away at the Yoriichi Type Zero.

"What are you doing?!"

Kotetsu, both shocked and furious, rushed forward to stop him.

A hand pressed down on his shoulder.

He turned his head to look.

It was Kanroji Mitsuri and that short woman wearing the butterfly haori.

"Kotetsu-kun, don't disturb Mr. Luo En. Just watch."

"No! That guy is destroying the Yoriichi Type Zero!"

Kotetsu said angrily, "Let me go. The Yoriichi Type Zero is already badly damaged — it can't be ruined any further!"

He struggled to break free, but he couldn't escape Kanroji Mitsuri's monstrous strength.

"Calm down, Kotetsu-kun."

Kanroji Mitsuri said to him seriously, "Mr. Luo En is repairing that mechanical puppet."

"Impossible. The technique used to make the Yoriichi Type Zero was lost long ago. Even the best swordsmith couldn't repair it — how could an outsider possibly know how to fix…"

Kotetsu didn't believe it at all.

But when he looked up and saw the black-clad youth's serious, focused expression, and the orderly movements of his hands.

He froze on the spot.

"He… is really repairing the Yoriichi Type Zero? That can't be real…"

Kotetsu stared blankly in that direction, his eyes widening slightly beneath the Fire Mask, his whole body trembling: "This kind of technique…"

"Why would an outsider know the structure of a puppet…"

Seeing him staring dumbly in that direction.

Kanroji Mitsuri also released her grip, standing side by side with Kocho Shinobu.

"To think he can even repair a mechanical puppet — Mr. Luo En really is astonishingly incredible."

The gaze Kanroji Mitsuri directed at that black-clad figure was full of admiration and reverence.

Her earlier thoughts of marriage had completely vanished.

Although she wanted to find a man stronger than herself to marry, she didn't feel at all that she was worthy of becoming the partner of a figure as godlike as him.

Being able to slice off a mountaintop with a single sword strike was already beyond the reach of any human…

Kocho Shinobu said nothing, but her gaze toward that figure also carried a deep respect.

……

29, system upgrade complete! Three methods.

Two days later.

Luo En, who possessed the Mechanical Expertise skill, fully restored the Yoriichi Type Zero to its original state.

When they saw the restored Yoriichi Type Zero execute its complete sword techniques with even greater fluidity.

Kotetsu, deeply impressed by the mechanical skill Luo En had displayed, dropped to his knees directly in front of Luo En, pressing his forehead tightly to the ground.

"Master Luo En! Please take me as your disciple! I'll do anything!"

"No."

……

In the end, Kotetsu still couldn't get Luo En to agree to take him as a disciple before Luo En left the Swordsmith Village.

…………

On the fifth day after arriving at the Swordsmith Village.

Luo En and Kocho Shinobu returned to the Demon Slayer Corps headquarters.

Kanroji Mitsuri had received a mission the day before and left the Swordsmith Village early.

After returning to the Demon Slayer Corps headquarters.

Shinazugawa Sanemi, whose injuries had mostly healed, learned the news and immediately came before Luo En, sincerely apologizing for his earlier rashness, rudeness, and ignorant offense, and thanking him for treating Ubuyashiki Kagaya.

Luo En had never really taken it to heart in the first place.

So that matter was considered closed.

Luo En returned once more to his leisurely days — drinking tea during the day, sampling wine, eating sweets, and giving Kanao some pointers on swordsmanship.

Kocho Shinobu went to the Butterfly Mansion during the day to check on the patients, and at night came to his place for swordsmanship sparring, personally experiencing the domain of the Transparent World under Luo En's breathtaking swordsmanship.

Such days continued for three or four days.

A piece of news broke the peace.

"Mount Natagumo — a Twelve Kizuki has appeared!"

"Tanjiro and his companions have already encountered it."

Upon learning that several corps members afflicted with spider poison needed rescue, Kocho Shinobu and Kanao immediately took the Kakushi members and hurried toward that location.

……

In the small courtyard near the Butterfly Mansion.

Luo En lay on a reclining chair beneath the cherry tree, sipping wine and gazing at the blue sky and white clouds.

That Spider Mountain…

Indeed, it's about time now…

Tanjiro should have learned the Flame God's Dance by now; next time, I'll guide him in the Sun Breathing Technique…

【Ding, system upgrade complete.】

Luo En heard the sudden, long-absent mechanical voice of the system in his mind.

He even paused for a moment.

【Strongest Check-in System upgraded to the Strongest Dimensional World Check-in System.】

Luo En suddenly remembered.

Isn't today the thirtieth day?!

His long-calm heart surged with excitement.

Can I finally go back?!

"System, I…"

【Analyzing world structure… Detected host location — Demon Slayer World, current location: Demon Slayer Corps Headquarters, check-in available. Check-in grants corresponding rewards. Proceed with check-in?】

"Check-in."

【Ding! Check-in successful. Reward obtained — Vitality +10, Mental Power +10.】

【Reward obtained — Perfect-Level Demon Transformation Potion ×1, Perfect-Level Human Transformation Potion ×1.】

"Perfect-Level Demon Transformation Potion, Perfect-Level Human Transformation Potion?"

Luo En froze.

After checking, he understood.

One potion could turn a human into a perfect demon as desired by Muzan Kibutsuji; the other could turn a demon into a perfect human.

Quite useful.

After reading the description of the Perfect-Level Demon Transformation Potion, Luo En couldn't help but feel tempted.

A demon unafraid of sunlight, without a vulnerable neck, capable of resurrection from mere cells, and able to reshape its form at will… truly a flawless ultimate being.

To become a demon meant abandoning one's human identity — for Luo En, a lingering unease remained.

"Keep them for now. Deal with it later."

Luo En thought, and placed the vial of crimson, crystal-clear Perfect-Level Demon Transformation Potion and the Perfect-Level Human Transformation Potion back into the reopened system space.

He had more important questions to ask.

"System, can I still return to the Pirate World?"