In the instant he confronted Leisei, Mirajane knew clearly that Leisei was not a pretty but useless vase created by Igor, but a thorough weapon of war.

"I'm going to go."

In an instant, Mirajane abandoned all her previous contempt for Rese, entered battle mode, and charged towards Rese with a piercing sonic boom.

"Buzz!"

Faced with Mirajane's surprise attack, Rese simply transformed her arms into the shape of missiles, preparing to clash head-on with Mirajane.

"hehe."

However, Mirajane did not choose to confront Reese head-on. With a smug look in her eyes, she flew into the sky with a flash of her wings and said softly, "Sorry, I've already seen Ig use this move."

"call out!"

Without uttering a word, Reese's arm, which had transformed into a missile, shot out like an arrow, heading straight for Mirajane in the sky.

"Soul Ripper".

Mirajane had anticipated Reese's attack, after all, she and Igor had fought too many times, and her familiarity with Igor's 'Bomb Demon' was second only to Igor himself.

Mirajane raised her hand and released a purple magic circle. From the magic circle, one after another thick arms, as tall as small buildings, roared out and grabbed at the missiles released by Leisei.

"Boom!!"

The moment Mirajane's giant black hand collided with Leisei's missile, a massive plume of smoke covered half the sky.

"Buzz!"

As for Reese on the ground, she took this opportunity to transform her legs into missiles. Using the reaction force generated by the missiles and the ground explosion, she leaped into the sky, her height exceeding that of Mirajane's head.

"what?"

Mirajane was shocked to see Reese's fighting style for the first time; it was a fighting style she had never seen in Igor before.

Yes, in the past, when Igor fought Mirajane, he had too many things to worry about, so he had never used his true strength.

"call out!!"

While Mirajane was in a daze, Reese's legs transformed into missiles, and her hands became missile thrusters burning with flames, as she charged towards Mirajane like a bomb.

"Boom!!"

Mirajane was caught off guard and couldn't dodge at all. She could only cross her arms in front of her body in an attempt to block Reese's attack.

"Boom!!"

The next second, intense flames ignited half the sky, and a huge fireball and mushroom cloud nearly swallowed up the entire field of vision of Igor, Elfman, and Lisanna.

As for Mirajane herself, she was forced out of full reception mode by Reese's attack, flying out of the dark smoke in the sky and crashing to the ground.

"Bang!"

Fortunately, Igor was prepared and caught Mirajane the moment she was sent flying backward.

"Damn it..."

Mirajane landed slowly on the ground under Igor's protection. She opened her mouth and exhaled a thick cloud of black smoke, angrily saying, "This doesn't count. I was careless this time. I will definitely win next time."

Well, so-called smoke but no harm!

While Reese's attack appeared incredibly powerful, the energy was not concentrated, and not much energy actually landed on Mirajane, so it did not cause her any real damage.

Anyway, it was much weaker than the supersonic kick that the 'Northern Beast King' launched at Ig, which was dozens of times faster than sound.

When Igor was kicked more than ten kilometers away by the 'King of the Northern Beasts' for the first time, his mind was completely blank.

"Okay, okay, okay, I'll definitely win next time."

Igor sighed. Judging from his current cultivation speed, Mirajane's chances of surpassing Reese were not very high.

But Igor won't undermine Mirajane's confidence; he's all about maximizing emotional value.

"Um?!"

"Is it possible to play with magic like this?"

Ulfheim raised an eyebrow slightly. This was the first time he had ever known that a user who received magic could use the souls they received as summoned creatures to fight.

“Igor, you’ve really inspired me. But with your ‘genius’, it makes me, as your master, feel quite unfulfilled.”

"As expected, Mirajane, Elfman, and Lisana make me feel more accomplished as a teacher~"

Ulfheim muttered to himself.

To be honest, Ulfheim didn't find much of a sense of accomplishment as a mentor in Igor.

Igor has his own ideas about both the understanding of receiving magic and the understanding of 'magic' and 'magic barrier' particles.

Even Igor will return to inspire him as his mentor.

Rather than saying that Ulfheim was Iger's mentor, it would be more accurate to say that they were both mentor and friend.

"Oh, I'm so ashamed."

Ulfheim felt guilty for not being able to teach Ig.

Chapter 37 A year has passed in a flash, and Igor's strength has improved by leaps and bounds!

Igor then took a month off.

A month later, Igor began preparations for the campaign to defeat the 'Eastern Beast King'.

The 'Eastern Beast King' is a beast king that resembles a giant bear and occupies the eastern part of the entire Monster Forest. It is a beast king known for its strength, and Igor is best at dealing with opponents who excel in strength.

After Ig switched to his 'Bomb Demon' form and unleashed several Super Bomb Fathers in succession, 'Eastern Beast King' was naturally defeated by Ig.

Igor naturally did not kill the 'Eastern Beast King', because killing the Beast King at will would disrupt the balance of the Monster Forest, ultimately leading to countless monsters killing each other for territory.

So Igor simply cut off the incredibly sharp claws from the 'Eastern Beast King' bear's paw as proof that he had defeated it.

After defeating the 'Eastern Beast King', Igor returned to his master's stronghold in Ulfheim and released Reese to fight Mirajane once again.

Of course, the final result was still Mirajane's defeat.

"I will definitely win."

Mirajane clenched her pink little fists and said angrily.

"I know, I know."

Mirajane, you will definitely win!

Igor kept praising Mirajane and cheering her on.

Time flies, another month has passed.

Having adjusted his condition, Ig began to deal with the 'Southern Beast King'.

The 'King of the Southern Beasts' is a giant serpent that lives in swamps and is known for its endurance and elusiveness.

After the 'Southern Beast King' realized that the 'Northern Beast King' and the 'Eastern Beast King' had been defeated by Ig in succession, she lay in the swamp and never went out.

In order to keep watch over the 'King of the South', Ig endured his discomfort and built a hut by the swamp.

Because the southern part of the Monster Forest is an endless swamp, there are so many insects that Igor left Leise there alone and ran away.

Because Rese is made entirely of explosives and has no self-awareness, she is not afraid of the poisons in the swamp.

Even Reese herself from Chainsaw Man probably wasn't afraid of the poisonous creatures in the swamp.

Time flies, and three months have passed in the blink of an eye.

As August of X779 approached, the weather began to warm up, and the 'King of the Southern Beasts' began to stir.

"Nothing happened in the swamp today."

On this day, as usual, Leise came to the swamp to record the situation of the swamp for Igor. She stood by the swamp, looking at the endless mud, and murmured to herself.

"Boom!!"

However, the moment Rese relaxed her guard, the once calm swamp suddenly split open, and a monster more than four meters wide and more than fifty meters long, resembling the 'Mansakura' from the theater next door, suddenly emerged from the swamp and swallowed Rese and the house behind her in one gulp.

Yes, this enormous python is the 'King of the South', the strongest of all the 'Kings of the Beasts' in terms of overall strength. However, due to her nature, she will not leave the swamp, which has prevented the balance between the various Kings of the Beasts in the jungle from being broken.

"Hiss hiss hiss~"

After the 'King of the South' swallowed Leise, a human-like smugness flashed across her face.

But this moment of triumph was short-lived, and things took a sudden turn for the worse.

A look of terror flashed across the face of the 'Southern Beast King' before she opened her gaping maw without a second thought, releasing thick smoke and black gunpowder from her mouth.

Well, the 'King of the Southern Beasts' mistakenly thought it had devoured a delicious human, but in reality, it had swallowed a bomb.

The scales on the 'Southern Beast King' are very hard, harder than steel, so ordinary magical attacks are completely useless against her, but her internal organs are very vulnerable.

After being hit by the self-destruction of an S-class mage who used all his magical power as a trigger, the Beast King of the South was knocked unconscious.

Therefore, the 'Southern Beast King', which Igor should not have been able to defeat with his current strength, was outmaneuvered by Igor.

"Oh my gosh, isn't that Nan? Why did you stop hiding?"

After watching the 'King of the South' get blown up, Igor took a scale from its body as proof of defeat and kindly 'admonished' it, saying, "Remember next time, don't eat just any random stuff. As they say, illness enters through the mouth."

"Next up is the last beast king."

Igor stretched his body and looked westward.

In fact, during the days that Ig used Rese as bait to 'fish for snakes', he was not idle. He had already investigated the specific situation of the 'Western Beast King'.

It can be said that for Ig now, the 'Western Beast King' is the most difficult of all the Beast Kings to defeat.

It's even more difficult than defeating the 'King of the Southern Beasts'!

Because the 'King of the West' is a large bird, it can fly, and it flies very fast.

If the 'Northern Beast King' is the fastest beast king on land, then the 'Western Beast King' is the fastest beast king in the sky.

Fortunately, in addition to the 'Crusher Demon' and the 'Bomb Demon', Igor now has the 'Gun Demon'.

"It can fly!"

"Then I'll shoot you down..."

With that thought in mind, Igor returned to Professor Ulfheim's base and rested for a month to adjust his condition.

A month later, Id headed towards the valley where the 'Western Beast King' was located.

However, Igor regretted it after arriving in the valley, because he discovered that the bastard 'King of the West' was not a man of martial virtue and had actually raised a group of 'lackeys'.

To be honest, this was the first time Ig had ever seen a beast king living in a group.

Yes, after Igor arrived at 'Valley of a Hundred Birds', all he could see were birds. He roughly counted at least several hundred flying magical beasts in the sky.

Moreover, each one is 'A grade' or higher, and some are even 'S grade' monsters.

"It seems we need to take a long-term view."

With that, Igor returned to the base where Professor Ulfheim was located.

And so it is.

Time flies.

Half a year passed in the blink of an eye.

The year is July of X780.

During those six months, Igor attempted to force his way into the valley several times, but was driven away each time by the birds outside.

But Igor remained calm and composed, and he would appear outside Bird Valley on the 15th of every month.

So much so that these flying monsters have almost gotten used to Ig's presence.

May 15, X780.

Just as Igor appeared right on time on the 15th outside Bird Valley, attracting the attention of hundreds of bird monsters with strength ranging from 'A' to 'S', Igor smiled when they saw that the person who came was actually Igor, their defeated opponent.

"Sorry, today is different from usual, I will win."

As Igor spoke, a torrent of magic within him transformed into a pillar of light that pierced through the layers of dark clouds in the sky.

Yes, after a year of arduous training, Igor has finally made another breakthrough.

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