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

"Should I start learning swordsmanship?" Minato asked to break the awkward silence.

As the cause of that awkward silence, Minato proposed an idea to learn swordsmanship! He never wielded any weapon, so it would be an utterly new experience.

And if that Heaven Sword was indeed the weapon that breaks the balance of the whole universe, then learning swordsmanship sounded like an exciting and excellent idea.

Yuna sighed, "Learning basics wouldn't hurt. Do we have someone here who knows swordsmanship?"

Her eyes shifted to Ingrid, but the elven queen shook her head sadly.

Elves used thorns coming from their magic circles, but that wasn't swordsmanship, and it shouldn't help Minato much.

Besides, the elves were similar to Bei in that aspect. They instinctively used their thorns, and that weapon was used more as a transmitter to use more complex magic circles.

A few thrusts and slashes would be the most elf did in the battle.

Minato nodded, "Hmm... If this is such a strong weapon, then I guess I will just need a slash or two. I will learn the basics once we leave the dungeon."

The world didn't lack swordsmen.

Minato also could ask for guidance in his homeworld, Earth.

That was one thing, but Minato just received a part of that Heaven Sword. He would need at least a few more parts to complete the weapon.

However, the blade's appearance pleased Minato.

He had a weapon that would help him deal with other overlords, to say nothing of Minato's enemies in his world and outside!

"I will prepare to face the Lord Beast," Minato said.

Everyone around him tensed, then nodded without concealing their feelings.

-

While Minato learned a magic circle to conquering the dungeon, his beloved spent time with the elves.

Bei and Yuna didn't hide their appearances anymore.

That was due to Heaven Sword's appearance. They just couldn't shake off that precognition within their hearts.

Initially, it began with Yuna meeting Minato.

It was like an unprecedented and rare meeting between mortal and goddess, considering their backgrounds and lifespans. Then, Bei casually chose one of the worlds with the dungeon whose insides hid such a treasure.

Nothing was planned, yet it seemed like Minato's life followed some kind of script, or things just fell into his arms.

"I was happy with Minmin's Overlord rune. It gave him real chances of contending with our father... But things happen so fast... I am scared Minmin might break the current world's stalemate," Yuna bit her lips.

If beating her father by Minato was a source of her happiness, his quick progress became a worried knot within her heart.

The stalemate between the current overlords was naturally due to the heavenly and inferno treasures scattered across the universe.

She didn't know whether her father had one of the pieces or the whole weapon ready for the conquest!

It wasn't like sharing it with outsiders was a smart idea, but was Yuna really an outsider?

'I am already an outsider...' Yuna smiled as she caressed her marriage ring.

Regardless of her status, Yuna hoped that things would stay the same.

Her husband's goal was always to beat her father and get recognized.

Perhaps, that wish was why Yuna never really thought about the consequences of a newbie Overlord appearing in her family's circle.

After all, it would be like an alliance of two Overlords.

That would be a significant shift in the current balance. Other Overlords would probably consider alliances as well, and it would start some serious power shift!

Yuna sighed and looked at her sister.

Bei was in a different mood.

Whatever happened, she was sure they would be able to overcome all trials! Minato's power was so great that her father should consider it a thousand times before doing any punishment to him.

The fact they appeared in this world was also the great luck on their side, and Bei believed it was destiny that brought everyone together in this low world.

"Elder Sister is worrying too much," Bei smiled, "We all have gone through dangerous events, be it our world or other high worlds. We will overcome them all."

"Let me take a little of your positivity," Yuna extended her hands and hugged Bei, a pleasant surprise to the vulgar princess.

They both stood in a close embrace for a short time, then they went around the elven tribe.

Minato had given them one of his armors.

Those armors stood like mechas, and the elves drove it to pass their magic circles to it and help it grow stronger.

Ingrid was one of the elves as well.

-

At last, Minato learned how to open a way to the Lord Beast.

He and Aya would be the ones to face them alone.

Minato faced his beloved, "You knew I would want to go here alone. Yes, I can't fight real enemies with you around. Spend this time with elves and help them get stronger. I will be back soon."

"Yes, Minmin. Don't die," Yuna replied with a faint smile, then left a kiss on her husband's lips.

Bei smiled widely, "If you die, you will always twat!"

She also left a kiss, then the elven queen faced Minato, "Ingrid looks forward to Master's success."

Minato felt more than blessed and encouraged.

He raised his chin and nodded with conviction, "I won't lose."

He turned around and faced Aya.

Both of them started drawing the new magic circle.

It was small, around palm-size, then as Minato poured his mana and order, the magic circle spread widely.

From it, the doors opened, "Well... In the end, it will be better to quickly take over the dungeon! Let's go, Aya!"

"Yes, Husbando Overlord!" Aya raised her clenched hand and followed the newbie Overlord.

They both went through the doors, then those promptly closed and disappeared.

No one could follow them!

No one could watch that encounter!

That was Minato and Aya's battle!

Everyone believed in them and looked forward to their return!