Isao accepted this challenge!

What was the point of getting Tanjiro's DNA?

Many have probably questioned him since the beginning, and many would say that Tanjiro didn't have much of a worth. If it was at the end where he powered up and could use the "Sun Breathing" as he wished to and even defeated Muzan Kibutsuji, then many would ask him to replicate Tanjiro's DNA. 

But now? 

What was the point? 

Tanjiro was, after all, just a poor boy who had to take care of his widowed mother and many of his younger siblings. There was no point at all. 

If it had been in the past, Isao would have thought so, but it was different after he got Takashi's DNA. 

Still, Isao had to say that it was too cruel to compare Tanjiro with Takashi since, unlike Takashi, who could only whine and run away, Tanjiro worked hard to help everyone. Even if he might lose his life in the process, he would do it as long as he could save people.

However, it didn't mean that Tanjiro was crazy or had hero syndrome. Instead, he knew the pain of losing a family due to the demon, and he didn't want others to feel the same way. 

His attitude and way of life were much different from Takashi's, who wanted to prove that he was better than everyone else. 

At the same time, Isao had to say that to become a genuinely good guy, he had to follow Tanjiro's example.

Still, first and foremost, it was a question: Why did he replicate Tanjiro's DNA even though he would hardly get anything in return?

Well, if one said so, then Isao had to say that they were silly since they only looked at the short-term gain instead of the long-term gain. 

The first reason why he got Tanjiro's DNA was to replicate Tanjiro's talent. 

As the protagonist, while Tanjiro was weak, he would become strong, if not the strongest, in the future. 

A hardship from the weak to the strong was something normal for the protagonist of a Shounen manga. 

Isao wanted to copy that talent, especially Tanjiro's sense of smell, which made him able to see a slight future or precognition, which was quite frightening, he thought. Moreover, this wasn't the only one, as there were many talents that he could gain from Tanjiro. 

The second reason was the knowledge. 

While others thought that the original breathing, the "Sun Breathing," had been lost, Isao knew that Tanjiro knew it as his father taught it to his ancestor, who was taught by Yoriichi Tsugikuni. 

Naturally, as Isao got Tanjiro's DNA, he got this knowledge. 

However, more importantly, the last reason, and most importantly reason, was luck. 

How could the protagonist become a protagonist? 

It was their great luck that allowed them to enter various events and arcs, which made them stronger and grow as individuals. 

Previously, Isao didn't believe in something conceptual, such as luck, but that wasn't the case, especially after he gained Takashi's DNA. The luck, which was invisible from the eyes and couldn't even be seen, existed, and he, who had the luck of being reincarnated and the luck of Takashi, allowed him to steal all the delicious events that should be Takashi's. 

He took away everything that should have been Takashi's. 

Many would say that Isao was evil because he had taken Takashi's luck, but he didn't think so. Instead, he felt that he was a great guy because he allowed everyone to have a great place to stay and a sense of security. Moreover, he also helped Takashi escape danger and comforted Takashi's childhood friend, who was frightened. 

If Isao wasn't a good guy, then what was he? 

Frankly, others might also have great luck, especially those side characters in the main story, but compared to the protagonist, they were too pale, so that was why he took a lot of trouble searching the entire country to search for Tanjiro since he wished to get that luck of his. 

Now, Isao had gotten that luck. 

With this, his luck had become even greater. 

The combination of his original luck, Takashi's luck, and Tanjiro's luck made him feel so great, as if he had never been before. 

If Isao had a comparison, if he was breathing in the murky and full smoke air before, at this moment, after he gained Tanjiro's DNA, he was like breathing in the freshest air in the countryside. 

Moreover, the world and fate also started to move in his direction, gathering together as if it was being absorbed by a black hole, a pitch-dark place without a single light. 

At the same time, the knowledge of complete "Sun Breathing" also started to enter his head. 

If Isao had the DNA of Yoriichi Tsugikuni, Isao felt like it would be even greater, but with his luck, he believed that he could get the DNA of the strongest demon slayer in history soon. 

Still, as the kindest guy in the whole universe, Isao was going to compensate Tanjiro. 

"Do you want to buy my family's dancing art, Iinuma-san?!" 

After Isao came to him, Tanjiro wondered what Isao planned to do. Frankly, while he had an urge to run away, he knew that he couldn't, and he gave up. At the same time, he was quite curious why such a wealthy young master came to him, who was nobody and came from a poor family. 

Yet, out of expectations, Tanjiro didn't expect Isao to wish to buy his family's dancing art. At first, he was in doubt, but he could tell that Isao also didn't lie. Moreover, he didn't think that Isao also lacked money, especially when Isao's followers gave money to one of the house owners to let them use it as a place to talk. 

How luxurious and excessive, Tanjiro thought, especially when he saw how Isao used a lot of money directly to borrow one of the houses. 

However, Tanjiro had never been crazy about money, and he had never thought money was something the most important in life. 

Still, if Isao knew what Tanjiro was thinking, he would roll his eyes, for there was nothing good about poverty. 

In poverty, everything was hard, and you couldn't give your loved one a proper life.

Whether it was education, food, clothes, or even medicine to cure your loved ones, all of those things needed money. 

Isao was realistic, but Tanjiro was idealistic. 

Yet, Tanjiro's thought was also understandable since he definitely wasn't the only one who wasn't crazy about money. Instead, in this period, the majority of people in this country thought that money was dirty and vile.

If there was a reason for this, why everyone thought that money was something dirty and vile was all due to the brainwashing of the famous leader of Japan, Tokugawa Ieyasu. 

To solidify his rule and ensure that no one would overthrow him, Tokugawa Ieyasu devised a plan to make everyone moderately poor and disdain money, thinking that honor and duty were everything. 

Why so? 

It was because money was the source of greed, and the reason why the first person who was about to unite the country, Nobunaga Oda, died betrayed by his retainer was also due to money. 

Still, the history lesson aside, Tanjiro hesitated and asked, "I... what do you plan with my family art?" 

The dancing art that was taught by his father was something important to him, and he swore to protect its tradition for his family. 

"Is that important?" Isao raised his brows, feeling weird from Tanjiro's question since he thought this guy shouldn't be happy with how he planned to buy Tanjiro's family art, especially when there was no need for him to do so. After he got Tanjiro's DNA, he could just leave, but he was a good person, so he decided to give him money to help his family. 

With money, Tanjiro could give his family a good house, food, and a good house. 

Yet, instead of agreeing, this guy asked him such a strange question. 

"If you don't tell me what you are planning to do with it, then I won't teach you." 

Frankly, instead of money, if Isao came to Tanjiro and sincerely asked him to ask, even without money, Tanjiro would teach him, but Isao used money, so the protagonist didn't plan to teach Isao. 

"This bastard! Who do you think you are?!" 

"You should be glad that IInuma-sama came to visit so far away in this stingy, poor village!" 

"You should be grateful that Iinuma-sama came to give you money!" 

Still, everyone who heard Tanjiro's refutation became angry and wished to beat this guy up. 

While Tanjiro was startled and knew that this was bad news, he wouldn't change his view, and with the hostility that everyone had toward him, he definitely wouldn't teach Isao no matter what! 

However, Isao didn't get angry. Instead, he looked at Tanjiro in surprise, thinking that this guy was really a good guy. 

'What a good guy...' 

Tanjiro didn't want his money, and it saved Isao a lot of his money.

After all, Isao planned to give Tanjiro a lot of money, so if Tanjiro refused him, then there was no need for him to give that money, right? 

Yet, at the same time, Isao felt that this was a challenge for him, and he had to make Tanjiro accept his money. 

Isao was going to accept this challenge! 

---

By the way, which one do you think is better? 

Rakudai Kishi no Chivalry or Mahouka Koukou no Rettousei?