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

Next day.

Minato spent a good night in the house.

He only had his room with Yuna, and no one bothered them. Following this, Minato's morning was calm as Bei hadn't invaded Yuna's private space.

It was slightly different as Bei occasionally glared in their direction, though.

At last, Minato decided to take quests.

"We are here," Minato pointed at the Ungrail City.

It was one of the three most prominent cities in the Majestic Ice Kingdom. That whole kingdom stretched out far to the north, and Ungrail City was their southern border.

That border separated and protected them from the empire known as Hard Steel Empire. Their name was quite odd for the husband's taste, but their strength prevailed in lands two times bigger than what the Majestic Ice Kingdom possessed.

They were not a joke.

Yuna added, "Each kingdom has from three to five dungeons in this world. Empires possess from seven to ten, and they are different breeds. While you take care of monsters and a patrol mission, I will keep an eye on them."

"Just information about them should be valuable. But since we are new here, those fuckers will ask for some proof," Bei added.

To her words, the couple nodded.

No one would believe them since they were newcomers, and only with Bei's magic circles, the husband would be able to scheme.

Scheming was not something Minato was fond of, and he would rather keep things upright. It also wouldn't help him grow as Minato wanted to balance out his strength and experience with the world.

That was why he adhered to the rules and made proper plans like any dungeon raider would.

Dungeon Raiders treated the outer world like the dungeon itself.

Every dungeon had its own rules, and the outer world was the same.

It was like the survival code one had to follow to survive.

Minato compared it to scout's code but much harsher and cruel.

"Alright! We have a map and other stuff. We also know who is on our tail, so let's head out and have a taste of another world," Minato grasped Yuna's hand and left his house.

Bei was on his side but not too far away, and she would sometimes touch his shoulder with hers.

It wasn't due to the crowd or anything going on on the streets.

She just casually struck close to her elder sister's husband.

-

Patrol missions were usually two times dangerous, so they were less than simple gathering quests.

Not only did the guild send dungeon raiders to the border, but they also forced people to deal with scary monsters.

One usually would see the empire's forces and their dungeon raiders strolling around. They would taunt opposite forces, and many people would take up the challenge. That went both ways, and people often unofficially fought.

Of course, that was mostly between dungeon raiders, but one would sometimes see people in sophisticated armors fighting as well.

Minato and his family arrived at one of the patrol spots roughly seven hours later.

It took them some time, but no one looked exhausted.

It was yet another adventure with Minato learning another world's customs. At the same time, sisters either helped him or bickered a little with each other.

"Sansei?" A man supervising the patrol missions called out the husband's party name.

Minato nodded, "Yes."

He went with his surname because he didn't need anything fancy. He was your ordinary guy who suddenly got thrown into a big world, so Minato didn't want to stand out but slowly grow up with strength.

"Well, your party stands out," That man introduced himself as Razork.

Razork was one of the veterans that had survived the harsh coldness from the Majestic Ice Kingdom as a human. He had his fair share of experience, and scars on his face told tales about his days.

Still, he didn't look frightening, and his smile somewhat surprised Minato and his family.

Razork reassured Minato, "If anyone from our side bothers you, tell me. We are united as one on this border, and I won't accept any internal conflicts. The same goes if anyone makes things harder for you. It's more common lately."

"I will keep that in mind," Minato thanked the soldier.

He and his wife bypassed him and headed toward the safe area.

It was quite a vast spot protected through various means from monsters and people. Here, people could take shelter after fighting monsters or prepare for their own mission.

Minato was well prepared, so he ignored all people looking in his direction, then headed further toward the forest.

Minato didn't find any monster so far, and he soon faced the natural border, "This river is much wider than I had thought."

"It's also inhabited by some nasty fishes," Yuna added with her beautiful laughter, "I think these aren't a problem since battles between both sides often happen."

"Yeah. I don't feel like dealing with them, though," Minato smiled widely, then the patrol mission began.

During the day, Minato would go along the river and check people on the other side. He often saw people with heavy steel armors smirking his way, then their following reaction would bore him to death.

Yes, they all stared at Yuna and Bei with unconcealable lust.

'Can't they just think straight for once?' Minato whispered with his eyes narrowed.

Inwardly, he started developing thoughts of erasing those lustful expressions. That was impossible for now as Minato couldn't use his magic circles for such a long distance, nor could he exert raw pressure with his strong body.

However, the fact that Minato thought of erasing those smirks was something much more impactful than he thought.

He began shedding what Earth and its rules had made him.

Minato expressionlessly stared at the empire's forces and their dungeon raiders, then he blinked a few times.

It was due to the earthquake that shook the whole forest.

"Elephant?" Minato said, then smirked, "Yes, you are one of the dangerous monsters. Let's have a great fight."

The monster howled in response.