My wife's sisters want me to make a harem?!

Minato sheltered himself and Ingrid in his box made out of the magic circle walls. His potential rose significantly due to the recent events, allowing the Overlord to bring out a few more walls and have a wider rectangle out of his magic circles.

Ingrid knew very well that her beloved would protect her. After the emperor appeared before them, she dropped all the talk and focused wholeheartedly on her task.

It wasn't like she would be able to talk sweetly with Minato around the emperor. Besides, it was courtesy of hers to let another existence have his words before imminent death.

Minato glanced at his armor, used his Overlord Pillar's might, then ordered it to fight the enemy next to him.

The armor didn't need any users.

All existences within the Overlord's world grew to the point where new abilities bloomed.

Minato couldn't make powerful armors like Snake Concubine did in the past, but he could give them orders and use their might much better.

It shouldn't happen in the low world, but Minato practiced for the situation where he would need to shelter himself in the box and use others outside.

The current situation was perfect for that sort of training.

"Are you seriously going to ignore it?" Minato asked as The Emperor didn't even glance toward the moving armor.

His opponent replied, "We swore to fight the Overlord himself, not his toys."

The golden superhero armor shimmered again. It burned with raw strength, letting out a blinding light in the process. It was the usual royal boost, but the Emperor pushed himself further.

He turned his flesh, bones, and blood for power.

That much was evident as he didn't expect to return to his kingdom. He either died here together with the Overlord or alone.

The royal armor was made out of the particular rune that allowed him to keep consciousness within the armor after his whole body had turned into energy fuel.

Minato noticed the sacrifice since The Emperor lost his sleeve. He was partially shocked as the fantasy world held more disgusting stuff within. Still, the burning arm would never leave Minato's memory.

It was a worthy sacrifice for the whole empire.

Alas, it bored Minato, "I thought I would see my armor fighting a worthy opponent... All my people respect it as part of my strength, so I can't find a good enemy for it..."

It was a half-lie as Minato spent some of their power at the dungeon races influenced by the hatred. Still, those people were crazy back then...

The same naturally went for the Overlord as only a crazy person would face the Overlord alone!

Alas, the craziness was often essential in the vast universe.

"Enough of you looking down on us, Overlord!" The Emperor howled.

He lifted his only hand up, clenching it tightly. All his blinding power gathered in his fist as he roared in pain and resolution. Shining even more blinding than before, the golden fist descended onto Minato's wall.

This time, Minato narrowed his eyes as the power was quite grand. If before the golden armor was pretty blazing, only now did it force Minato's eyelids down.

But as the fist landed on the wall, causing a crack to spread on the Overlord's magic circle, Minato's eyes widened, and he thoughtfully stared at the Emperor.

Ingrid also glanced to the side, then closed eyes calmly.

Yes, there was no threat.

The Golden Fist shattered after leaving the crack. It turned into debris, then other parts promptly followed its fall.

Since The Emperor was nothing but a soul, no one stood amidst those fallen parts...

Minato's Armor stepped behind those parts, then its big hand leaned down to gather all of them as per its master order.

"Perhaps if the whole world gathered against me, they would be able to take me down... Not anymore, though," Minato whispered, feeling his Overlord Pillar extending significantly within his world.

The Hard Steel Empire's strongest, The Emperor, died.

He died during the one versus one battle against the Overlord. 

His achievement? Crack on the Overlord's magic circle!

It was just one magic circle!

The news swept through the whole continent as the scouts used all at their disposal to reach their respective countries as fast as possible.

No one knew how many of those magic circles Minato could summon, but no one was delusional enough to think that it was just that one box. If one wall shattered, Minato surely would've conjured another one!

That was their belief, a belief that sank their hearts in more profound fright.

Not only the scouts saw it, but also the soldiers from the emperor's side. Their morales dropped heavily and nearly reached the bottom. No one could perform with such low morales, and it was more like speedrun to get the most achievements for Minato's races.

The Overlord dispelled his magic circles, then took Ingrid into his arms.

She promptly opened her eyes and replied, "I can move, Minato."

"Focus on your task," Minato replied while deeply looking into her eyes.

He climbed onto his mecha armor, then took a seat on its shoulder. Ingrid was in his arms, and as Minato donned himself in his popular clothes, her head fell onto soft fur where she felt her beloved's smell.

Ingrid comfortably settled herself on Minato, and then the mecha armor strutted toward the falling empire.

"I am highly interested in their royal dungeon. They helped the Empire significantly, and their armor at its acme left a crack on my magic circle," Minato whispered while looking directly into the capital.

He found the dungeon gates without any problem as the dungeon races had already invaded that part of the empire to hunt all soldiers and royalties.

Minato's mecha armor casually went toward the dungeon, amid all dead bodies, spilling blood, and repulsive stench.

He opened it and entered the first floor.

The temperature immediately skyrocketed as it was indeed the volcano dungeon! However, there was a surprise for the Overlord straight on the first floor!

And as Ingrid's eyes opened, she found out that the competitors had finally appeared!