Help! I changed the gender of the male protagonist in the yandere game

‘Looks like… it worked.’

Lake Master Snow Hag's voice slowly echoed, "That's right, Hyakusuke. This is the battlefield from a hundred and fifty years ago, seen through the eyes of the Spear Saint, the battle against the Cha Ghost King. The 'Trial Dream' you've entered is a dream woven together by those who died on the battlefield and those who survived."

"Look ahead. The battle is underway…"

Hyakusuke looked forward. A deafening roar erupted, sending sand and dust flying. Warriors on horseback and countless figures wielding spears were desperately attacking a giant centipede. Its body segments, covered in a crimson shell, were coiled together, repelling the attacks of sacred swords, spears, blades, and arrows.

The centipede bit a demon-slaying swordsman, its mandibles snapping shut. The man's body was torn in two. His lower half fell away, intestines spilling onto the ground. He died without even a cry.

"Die!"

Thunder descended from the sky, a barrage of lightning bolts shaped like curved arrows rained down, bombarding the centipede.

The great demon shrieked. Its head was blown apart. The explosions and lightning spread forward through the ranks of people, the intense blast of air and light, the hot wind and concussive force, swept over them.

The lightning also engulfed nearby allies. Even warriors and swordsmen wearing armor were injured by the aftershocks of hundreds of lightning strikes. Frankly, it was an indiscriminate attack.

At the same time, on the other side of the battlefield, a massive figure appeared.

"It's a Daidarabotchi? Form ranks… defense!"

Someone cried out in despair.

Boom!

A gigantic fist slammed down, cracking the ground, scattering wild grass, and causing the earth to tremble violently.

It was a giant demon called a Daidarabotchi. A single blow from it could cause devastation like a natural disaster.

The impact of the fist shattered the ground. Rows of shields were pulverized like leaves. Neither armor nor shields could withstand the monstrous strength. Nearly twenty high-ranking exorcists were crushed to death in that one blow.

Just as the giant demon let out a triumphant roar, the spell attacks from the group of mages descended—fire, lightning, acid, winds that sliced the air, a dense barrage of ranged magical attacks.

It was an artillery barrage of magic.

Iron, fire, wind, and lightning poured down seamlessly.

One explosion followed another. Even the giant demon, descended from the ancient giant race, couldn't withstand it and was defeated amidst its agonizing screams.

In front of Hyakusuke, a giant fireball crashed to the ground. In the midst of the violent explosion, dozens of charging monstrous apes were incinerated, not even their bones remaining. The ground was blasted into a crater, white smoke billowing out.

"…What is going on?"

Hyakusuke was stunned. Thick smoke rose around him. Everywhere he looked, there were battles between humans and demons, the sounds of battle deafening.

Suddenly, the night wind dispersed the white smoke.

A figure floating in the air approached. It was a warrior wearing ancient armor, his skin dark.

He radiated intense demonic energy. A Demon King-level Curse Reversal Barrier formed a sphere, enveloping the warrior's entire body.

The warrior simply floated in the air, displaying an overwhelming presence.

However, the opponent was not human, but a powerful demon, a Great Demon King standing at the pinnacle of demons.

‘This… is…'

His body was almost paralyzed, his mind blank. He could only think with fragmented consciousness.

He strained his nerves, desperately trying to move his stiff body. However, the Demon King's mere presence was enough to give him the illusion of being crushed.

The gap between them was too great, as if they existed in different dimensions.

"We meet again… my friend."

The armored man greeted him.

Hyakusuke couldn't even look up. He couldn't see the Demon King's face either, because the man wore a mask.

"This time… do you intend to hinder me again?"

The Demon King's voice was as calm as the night wind, without a trace of hatred or killing intent.

——Could this guy be the Cha Ghost King!?

The thought flashed through his mind. Hyakusuke instinctively raised his spear and pointed it at the figure.

At that moment, fear washed over his heart like the centipede's hundred legs. He had to admit that the opponent's unimaginable demonic energy alone was enough to deeply terrify the world.

‘A high-ranking Great Demon, able to completely transform into a human form… In the game's settings, I've only seen the Cha Ghost King's demon form concept art. His human form illustration has never appeared?’

…I guessed right.

‘Hehehe.’

Lake Master's voice echoed from the void.

‘The Calamity Lord, Cha Ghost King… This guy is the highlight of this trial. If you want to get the Demon Sword, Omagamaru, you have to complete this trial…’

You've got to be kidding me!

I wouldn't have enough lives to fight something like that…

He didn't even have the energy to retort. The Demon King's eyes, under the mask that covered the upper half of his face, seemed to lock onto Hyakusuke. The demonic gaze distorted the composition of the atmosphere, seeming to increase the air pressure.

"…Interesting."

He seemed to ponder for a moment, then a smile appeared at the corner of his mouth.

"Very well… It is also time to end this karma."

The Cha Ghost King merely made the declaration, and the pressure of the surrounding demonic energy increased sharply. In the face of the overwhelming wavelength of cursed power, Hyakusuke felt as if he was being torn apart by a hurricane.

No, it wasn't an illusion. The atmosphere was really being altered by the demonic energy. The wild grass on the hill rustled in the wind, and the leaves swirled in vortices.

The Demon King looked down, drew a long sword from his waist, and declared in a tone of finality, "Die!"

The words were filled with endless coldness, absolute and undeniable.

"Here it comes."

The whistling, overwhelming pressure made Hyakusuke feel suffocated. He had no room to retreat. A flash of sword light passed before his eyes, a long, wide silver arc slashing over his head, almost severing it.

Amidst the explosive sound, the crimson-lacquered spear collided with the long sword, sparks and metallic sounds scattering. Hyakusuke thrust out his spear. He didn't flinch, nor did he run.

‘Pressure and killing intent… the Spear Saint already had plenty of that.’

He stepped on the grass and fallen leaves under his feet, and the moment the blade fell, he raised his spear and thrust upwards. The spear shot out like lightning, deflecting the Demon King's sword.

——I can do it!?

I can touch the blade that's so fast it's almost invisible to the naked eye.

Hyakusuke focused his senses. It didn't matter if his eyes couldn't see. He would use his other senses to replace his eyes.

No, not just his eyes. His ears, nose, tongue, skin, he would use them all to sense his state and the state of the outside world.

"Good."

The Calamity Lord, Cha Ghost King, swung his sword. The blade flashed like lightning. Each strike could tear armor, shatter the earth, and cut through the void.

Hyakusuke thrust out his spear, tracking the trajectory of the blade. Sparks flew between the colliding spear and blade, dozens of intersecting silver lights appearing.

The space where the Demon King and Hyakusuke were fighting was filled with countless thrusts and slashes of blades and spears. Both unleashed their skills to the best of their abilities, exchanging sword techniques and spear techniques.

It was only at that moment that Hyakusuke realized the power of the Spear Saint that he now possessed. His body was incredibly light, yet within that lightness was an unimaginable stability, as if there was a stable sphere in his dantian area, capable of changing his center of gravity at any time.

"Spear Saint, so this is how you fight?!"

He was both surprised and delighted.

Although Hyakusuke had been able to steal the Spear Saint's fighting style through 'Mirroring' in the past, the replication effect was not perfect.

He had always believed that it was more like drawing a tiger but ending up with a dog. He couldn't truly grasp the Spear Saint's exquisite skills with that level of Mirroring.

"This fighting method is truly amazing…"

Hyakusuke couldn't accurately describe everything he was experiencing at that moment. What he was sure of was that in this 'Spear Saint body,' everything within him felt transparent, both inside and out.

The most amazing thing was the Spear Saint's ability to perfectly control his center of gravity. Every inch of his body could use the center of gravity instinctively, transferring power to any corner through the shifting changes between muscles.

The Spear Saint's dantian area seemed to have a strange sphere of condensed mercury, which could be large or small, hard or soft, moved at will, and even divided into many parts, distributing itself to every tiny and remote muscle bundle.

This allowed the Spear Saint to divide and shift this sphere with every movement, distributing the center of gravity evenly across different parts. In other words, for the Spear Saint, there was no such concept as 'losing balance.'

The use of spiritual power was the same. Just as the Snow Hag had said earlier, the Spear Saint's total spiritual power was not particularly strong, but he could use every strand of refined spiritual power perfectly.

Coupled with the adjustment and change of the center of gravity, the Spear Saint's distribution of spiritual power for each attack was also skillfully done without thinking.

The external attacks would be perfectly unloaded and transferred by the Spear Saint's spear skills, and those unbearable parts would even be transferred to his feet. The Demon King's lightning-fast strikes, containing super-human power, did not touch the Spear Saint at all.

"Clang!"

The two weapons intertwined with each other, then quickly separated, parried, and defended. Everything was smooth and natural.

The words 'Neutralizing Force' flashed in Hyakusuke's mind. The Spear Saint's fighting style had gone beyond the scope of spear techniques. This body of his could transfer and disperse the enemy's power when defending, even the attacks of spiritual power and demonic energy were no exception; when attacking, he could also condense the scattered power into one point at any time, breaking through the enemy's defenses with ease.

The two moved while attacking, their movements too fast to be seen with the naked eye. Scarlet sparks burst between the colliding spear and blade, and continuous clanging sounds rang out.

He and the Demon King ignored the surrounding battlefield, breaking through directly from the center. The swung sword could invalidate the flying spells, the thrusting spear penetrated flesh and blood like lightning, and the slashes cut the approaching demons and exorcists in half.

The fierce wind stirred up by the sword and spear cut through the air, turning into a swirling gale. A large demon with horns happened to get too close, was sucked in, and its entire body exploded with muffled sounds, bursting into a shower of blood, its limbs torn apart.

Hyakusuke and the Demon King ignored everything around them, and in the process of fighting and moving, they opened up a path of blood.

Around them, the sounds of swords, the roars of blades, explosions, flashes of light, flames and demonic arts flew everywhere, death, bloodshed, and screams continued.

"As expected of my friend, I can't kill you with just this one sword. It seems I can only use 'Omagamaru.'"

As the Demon King spoke, he drew another sword. He had three swords at his waist. He had only drawn one just now, but now, the Cha Ghost King drew the long sword that emitted a red and black demonic aura—it was a slightly curved katana with a wavy pattern. The black tsuba had a plum and crane design.

"Take this!"

The Demon King's eyes under the mask became as sharp as blades, and he slowly raised the Demon Sword, Omagamaru, in his left hand.

"——Secret Sword Art・Heavenly Mud Plow!!!"

Instantly, the blade turned into black lightning, and a torrent of power rushed towards him.