Invincible in the world, starting with the ghost curse

The Rock Pillar has such a strong physique, it must have reached the level of E8, Kamiya Seiichi couldn't help but admire it.

"Please draw your swords."

Tanjiro unsheathed his Nichirin sword with trembling hands, the blade trembling slightly. The others did the same. Shinobu Kocho had the most difficulty, barely managing to pull it out. Sadamaru was the most relaxed, her hand holding the hammer steady as a mountain.

“Immerse your mind in your sword.”

Everyone did so.

"The so-called Red Blade is a technique that continuously raises the temperature of the blade until it glows red. It contains the masculine and masculine power of the sun, and can significantly slow the recovery of injured demons. Furthermore, it can increase the power and penetration of your attacks."

"There are several ways to activate it. First, hold it with immense force, using your own immense strength to heat the blade. Second, use your own body heat to infect the blade, causing it to heat up. This method is unique to the Marked Swordsman. Third, use the friction between two swords to generate heat. If there are two swordsmen, they can rub their swords together to quickly heat them up."

"Now we are starting to try the first method, holding it with a tremendous force!"

This is a very powerful technique, and the fact that it can curb regeneration speed is a natural nemesis for evil spirits, everyone thought.

Shinobu Kocho was already sweating profusely, pursing her pink lips and gritting her teeth to persevere.

Beimingyu's hammer has begun to turn red, but the temperature is rising very slowly.

"You're doing it the wrong way. Use this method to gently vibrate."

Kamiya Qingyi placed his hands on Beimingyu's hands that were holding the hilt of the sword. Beimingyu instantly felt a huge force vibrating his hilt at high speed.

“Namo!”

Following the example, the hammer quickly heated up.

"Just try a few more times, Mr. Beimingyu. Your talent for strength far exceeds that of ordinary people."

Then, the swords of Zenitsu, Uzui Tengen and Fushigi Miyabi also emitted a faint red light.

“Okay, that’s enough!”

The pressure was relieved instantly, and everyone felt their bodies become lighter, as if they were about to ascend to heaven.

Shinobu Kocho was almost unable to hold on, and Kanao supported her with her hands. Seiichi Kamiya also handed her a handkerchief and continued talking in her sad eyes.

"Under pressure, it's easier for you to immerse yourself, but without my deliberate help, getting into that state again will require careful exploration."

"I will perform this process every morning from now on. Everyone can feel whether they can master the red sword through the method of great force. After all, this is the best method, and it can be done without the markings."

"Next is a method unique to the Marked Swordsman. Tanjiro, come here."

He waved and called Tanjiro to the front.

"Everyone, observe carefully and take note. You may also be able to activate the markings in battle later. If you can't learn the first method, you can use this method after you activate the markings."

Seiichi Kamiya held Tanjiro's knife-holding hand.

"Tanjiro, push harder, feel the markings on your forehead, and feel your body temperature rise."

Tanjiro exerted force with his hands, the flame markings on his forehead began to burn, and his body temperature rose rapidly.

“A little higher, okay, that’s it.”

The Sun Blade slowly turned red, from light red to dark red, and finally completely turned into a deep crimson color.

Muichiro and Kanroji who were watching also started to try and got the same result.

Everyone took note of the details.

"It's important to note that this is a hack, so it won't significantly increase attack power or penetration. It only retains the ability to curb regeneration speed."

“That’s enough!”

Nodding, Kamiya Seiichi divided them into groups.

"Shinobu Kocho, Kanao, and Inosuke, Giyu Tomioka and Tanjiro, Miyabi Fushigawa, Muichiro, and Genya, Iguro and Kanroji, and Mr. Haimeishima and Zenitsu."

"The method is the same. The divisions are just to make it easier for everyone to practice. If you meet people from other groups later, you can use the same method to sharpen your swords."