Inexplicable Duel

Golden eyes, long golden hair, and a beauty that even exceeded some goddesses. 

Isao was familiar with this young woman as it wasn't their first meeting, yet watching her emotionless face as she challenged him to the duel... he really didn't want to meet her at that moment. 

At this moment, he also lamented about his life. 

'What's wrong with my life...?' 

Isao yearned for a moment of respite, a chance to strengthen himself without the weight of the world on his shoulders. But it seemed that such a place, a sanctuary, was beyond his reach.

In the world of "High School of the Dead," Isao needed to build the society and erase those "things" from the world. 

In the world of "Kimetsu no Yaiba," wars were everywhere, and the world war was about to begin. 

In the world of "Mahouka," as he had shown his power in place of Tatsuya, he became the center of everything, and somehow, he could imagine the country, all dangerous people, and even the world would pull all of their attention to him. 

In the world of "Tondemo," there was no beautiful mature woman. Even the queen of the kingdom, who summoned Mukoda and three heroes, was rather horrendous. 

Then, what about the world of "Danmachi"?

While it was true that Isao had erased the danger that came from Apollo, there were still many goddesses who tried to get their hands on him, and if he refused them, he could imagine how extreme their actions would be. 

His body was already working hard to save the world, yet why did someone want to cause him trouble again?

"...you are?" 

Still facing the threat that came from the Level 5 adventurer, Isao knew that he couldn't run away. 

"..." 

The young woman blinked her eyes for a moment, then tilted her head. 

"I mean... what's your name?" 

"Ah, my name is Aiz Wallenstein." 

Aiz felt strange since there was someone who didn't know her name, but even so, she introduced herself. 

"I see." Isao extended his hand, and Aiz held his hand subconsciously. "My name is Iinuma Isao. Nice to meet you, Wallenstein-san." 

"Ah, um, nice to meet you." 

[You have acquired Aiz Wallenstein's DNA.]

[Do you want to absorb it?]

Her beautiful and emotionless expression reminded anyone of a doll. 

Sometimes, Isao even heard that someone called Aiz a "Doll Princess," considering her nature and personality, but as they were so close like this, he understood why she was called a doll. 

Or rather, this young woman had a communication issue. 

However, such a problem wasn't a problem, especially when she was gorgeous, and even if she had such a trait, many would still court her. 

Yet, Aiz wasn't his type at all, and Isao was too lazy to face this young woman, who suddenly came, standing before him, and asked him for a duel. 

Isao had just saved everyone in the world from starvation by calming the anger of Demeter, the goddess of food, so how could he have the energy to duel? 

"Aiz, what are you doing?!" 

Fortunately, someone with common sense stopped Aiz. 

"Riveria-san?" Isao looked at the beautiful high elf with her jade-colored hair. Compared to Aiz, this mature beauty was more his type. Unfortunately, elves were a troublesome race, especially with how highly strung and sensitive they were, but fortunately, they were a peace-loving and rational race. 

"I am sorry for her, Isao-kun." Riveria tried to stop Aiz and then apologized to Isao. 

"It's fine, but why are you here, Riveria-san?" Isao asked with doubt, and Hestia also quickly stood by his side, staring at Aiz with her best unkind gaze, but instead of making her appear angry, her puffy cheeks made her look so cute, like a puffer fish. 

Isao had the urge to poke Hestia's cheek somehow, but while he had such an urge, he listened to Riveria's reason why she was there. 

"Eina told me that this place was yours. It is a great place." 

There were books, the place was comfortable, and it was quiet. 

Riveria liked this place a lot, and if possible, she wanted to come again, but would it be possible for them to make an enemy with Isao? 

Moreover, Riveria also felt quite sorry for Isao, especially when he faced many things after he came to Orario, yet suddenly Aiz, the Level 5 adventurer, came and challenged him. 

If Isao was stronger, then Riveria was sure that he would have a dead vengeance against the Loki Familia, especially when Bete and Loki had made a bad impression on him. 

Lastly, as Eina chose Isao, Riveria wished to help him, especially when she thought about their last exchange. 

"I see." Isao nodded with a gentle smile. "Thank you for your patronage. If you have a request about the book, you can ask me; I will try to search it for you." 

"Really? Is that fine?" Riveria was surprised as she hadn't expected this service. 

"If it's another, they might not be confident, but I believe that I can do it." 

In this world, his connections and information-gathering skills were the best in the world. 

Still, as the two didn't talk for too long, Isao once again excused himself. 

Yet, when he thought that he could run away, Aiz once again stood before him. "Do you need something from me, Wallenstein-san?" 

"Let's have a duel." 

Aiz's expression never changed, and it was as emotionless as ever, but her voice was slightly nervous, yet it was also filled with determination, showing that she wouldn't leave him no matter what until he was ready to have a duel with her. 

"Hey, you are being unreasonable! Isao-kun is just a Level 2 adventurer! Do you want to bully him?!" 

It was impossible for Hestia not to get angry. When she thought that they would have a peaceful and comfortable life, trouble suddenly came once again, and this time, it came from the Loki Familia, which made her helpless. 

"Aiz, Goddess Hestia is correct. The difference in your level is too much. Your duel is unfair." 

Riveria looked at Aiz helplessly, but as someone who had always taken care of her from childhood, she knew that Aiz just wanted to become stronger. However, was there any need to challenge Isao? 

"It's... fine. I will limit my power to Level 2. By then, it will be fine, right?" Aiz wasn't good at talking, but even so, her wish to fight Isao didn't change. 

Yes, this duel was unfair, especially when she was a Level 5 adventurer and Isao was just a Level 2 adventurer, but if she limited her level to Level 2, then it would be fine, right? 

Watching how stubborn Aiz was, Hestia and Riveria were at a loss. 

On the other hand, Isao looked at the two and wondered why they didn't try again to stop Aiz. 

Yet, Isao could only sigh and knew that he couldn't escape from this duel. 

"Before I accept this duel, I want you to agree to some of my requirements." 

"Please." 

As long as Aiz could have a duel with Isao and understand why Isao could become so strong, then she would do anything! 

"First, you have to limit your power like me, and if you break that limit, you will lose instantly." 

"Yes." 

"By the way, how much are your assets?" 

"Asset?" Aiz was confused, but she told Isao honestly, "About this much..." 

"...you don't have much of an asset." Isao was speechless about Aiz's total assets. 

"...." Aiz was speechless and blushed, but then she made an excuse, "The weapons and armor aren't cheap..." 

"Well... it doesn't matter, but if I win, I want all of your assets, and if you win, you can ask me anything." 

"Yes." Aiz nodded without hesitation. 

"Aiz!" Riveria looked at Aiz in shock. 

"I want to do this, Riveria. Don't... stop me." Aiz had made up her decision, and she wouldn't stop no matter what. 

"Aiz..." Watching her determined and obsessed eyes, Riveria felt helpless, but when she thought about their bet, she felt that it should be okay as it was just an asset, and with Aiz's skill, it should be easy for her to get more money. Moreover, losing all of her money could be a good lesson for Aiz. 

'Wait, why am I under the assumption that Aiz will lose?' 

Yet somehow, Riveria had a hard time thinking how Isao would lose, especially when he had defeated Bete, who was also a Level 5 adventurer. 

'No, no. Aiz will win.' 

Riveria tried to shake the uneasy feeling in her heart and believed that Aiz would win. 

"If you are fine with anything, then as for the place of the duel, how about your Familia's headquarters?" 

"Okay." 

As Isao agreed to her duel, Aiz clenched her firsts in excitement, thinking that his secret to becoming stronger was just before her eyes! 

"....." 2x

Only Hestia and Riveria had to say that Isao was full of guts. 

---

By the way, are you familiar with Level 1 Dakedo Unique Skill de Saikyou desu?

Also, about the world of "Mahouka," you still remember Saeki Hiromi, Kazama's boss, in the previous chapter, right? 

I realized that her age is about 59. In other words, she is a granny. 

Considering her age, do you think I should go on? 

Oh, considering the timeline is still at 2092, she should be at her 56, but it isn't much different, though.