Chapter 43 Three years after the brothers Tsugikuni swapped bodies, a seventeen-year-old girl…
When Iwakatsu created the first form of Moon Breathing, Dark Moon, Night Palace, the three of us finally found a member of the Demon Slayer Corps, and it was someone we knew—the ancestor of the future Flame Pillar, Rengoku Kyojuro, who was also the swordsman from the Rengoku family who introduced Yoriichi as joining the Demon Slayer Corps in the original work.
It has to be said that genetics is a truly amazing thing. Four hundred years later, this Demon Slayer Corps member named Rengoku Tachibana Juro still has a head of yellow hair with reddish ends sticking up in all directions. He is undoubtedly the ancestor of the future Flame Pillar.
I originally planned to spend two days with Juro Rengoku before revealing our intention to join the Demon Slayer Corps. However, after I demonstrated my medical ninjutsu skills, which were comparable to bringing the dead back to life, this ancestor of the future Flame Pillar eagerly invited me to join the Demon Slayer Corps. He not only brought in all the Demon Slayer Corps members in the vicinity to act as persuaders, but in the end, he even alarmed the leader of the Demon Slayer Corps.
This lord, like his descendant Kagaya Ubuyashiki, speaks with a calm and gentle demeanor, possessing both leadership qualities and a broad mind. He is a kind and warm person. After witnessing my miraculous healing abilities, he solemnly invited me to join the Demon Slayer Corps as the team's physician, offering extremely generous compensation and benefits. He is a very generous and kind boss who is willing to let people work under him.
Since the head of the Demon Slayer Corps personally came forward, I naturally accepted his invitation. Incidentally, the issues of Yoriichi and Kokushiro joining the team were also resolved. With the lord's influence, the two of them could join the Demon Slayer Corps directly without having to participate in the selection process. It was like buying one and getting two free. The Demon Slayer Corps made a huge profit.
As it turned out, the Demon Slayer Corps really made a killing on this deal. After Yoriichi joined the team, he began to teach Sun Breathing and swordsmanship. Even though no one could learn his breathing technique, various breathing styles were developed, allowing the strength of all the team members to improve dramatically in a short period of time. Not only was it easier to kill demons, but casualties were also reduced. This change made the members of the Demon Slayer Corps very excited.
If there's any shortcoming, it's that I couldn't cure my lord, whose face was half-disfigured by the curse. This curse was too powerful and couldn't be cured by medical ninjutsu at all, which greatly disappointed the Pillars. However, my lord comforted everyone with a smile, truly a wonderful person.
Half a month after joining the Demon Slayer Corps, our Nichirin Blade was also forged and delivered. When Yoriichi drew his Nichirin Blade, the entire blade turned a beautiful red, which I envied greatly. This is the true style of a user of the Sun Breathing technique!
When Kokushi drew his Nichirin Blade, the blade turned a silvery-white, like moonlight, even more beautiful than Yoriichi's blade. It made my mouth water. This is what a sword should look like! Much better than Kokushi's demon-transformed blade, which was like flesh and blood covered in eyes.
After seeing the swords of the Tsugikuni brothers, I eagerly drew my own Nichirin Blade. Just as I expected, having mastered the Breath of the Moon, the blade in my hand turned a beautiful silver-white, making me love it so much that I wanted to find a demon to test my Nichirin Blade on.
Although that's what I think, as the best healer in the Demon Slayer Corps right now, my primary task is to heal my teammates. I'm unlikely to be assigned any demon-slaying missions. If I want to practice on demons, I'll have to tag along on Yoriichi's or Iwakatsu's missions. It's just that I've only recently joined the Demon Slayer Corps and need to make a good impression on my boss by showing how hard I work, so I can only go out and slay demons when I have more free time later.
Since I couldn't go out, I asked Yoriichi and Iwakatsu to collect some demon blood and flesh for me when they were killing demons, so I could do some research. I'm really interested in those immortal demons. Now that I have the opportunity, I naturally want to study them properly.
Both Yoriichi and Iwakatsu took my request to heart, and each time they returned from slaying a demon, they would bring me a piece of the demon's flesh and blood so that I could study it to my heart's content.
I also discovered that ghost cells are completely different from normal human cells; they can divide indefinitely, just like cancer cells. Or rather, ghosts are essentially cancerous humans. To turn a ghost back into a human, we need to consider how to completely kill these infinitely dividing cancer cells. In short, it's quite difficult.
However, I immediately stopped the research project not long after it started because I realized that it was too dangerous, especially since human trials would inevitably be required later on. If we were not careful, we could go astray. So I decided to give up.
Having abandoned that topic, I turned my attention to how to free the demons from Muzan's control. That way, I could get information about Muzan from the demons. Otherwise, who would know where to find the most cowardly boss in history?
To achieve this goal, I even wrote an application to the head of the Demon Slayer Corps, hoping he would allow me to raise a demon for experimental purposes. The lord's approval came quickly, and it was permitted in principle, which made me very happy. I immediately asked the Tsugikuni brothers to help me find a suitable demon to capture.
Not long after, Yoriichi and Iwakatsu each brought back a demon. I put the two demons, which I had given as souvenirs, into the wisteria cage and began related research and experiments.
Breaking Muzan's control over the demons is difficult and cannot be accomplished overnight. However, during the research process, after experimentally injecting two demons with my specially concocted wisteria poison, they surprisingly showed signs of anorexia. They had been roaring every day that they wanted to eat people, but after that, no matter how hungry they were, they never cried out for food. I even specially prepared some human blood to feed the two demons, but they vomited violently – truly the most bizarre event in Demon Slayer.
Although the wisteria poison was quite interesting, I didn't take it to heart and continued to research how to break the control that Muzan had engraved into the demon's bloodline.
Unfortunately, before I could finish my research, a major event occurred in the Demon Slayer Corps: the swordsmen who had mastered the Breathing Technique began to awaken their Demon Slayer Marks one after another.
The first person to awaken the mark was Iwakatsu, who activated his body's potential during a battle with a demon, causing the mark to appear.
It must be said that he truly lived up to his reputation as Yoriichi's brother; the mark on Kokushibo's left forehead was exactly the same as Yoriichi's. Not only that, but he also had a flame-shaped mark on his right neck that extended from his chin into his clothes, giving him a dramatic leap in strength and opening up his Transparent World. Unfortunately, he still couldn't defeat Yoriichi.
I think Yan Sheng must be incredibly frustrated. However, as he gets older, he has become more composed and reserved. He used to be less able to hide his emotions, but now he has become exceptionally steady. Many times, even I can't tell what he's thinking. He has really grown up.
The Demon Slayer Corps' awakening of the Demon Slayer Mark was like a signal, and the swordsmen began to awaken their marks one after another. Because of this, I specifically went to the head of the Demon Slayer Corps and told him the information that those who awaken their marks will not live past the age of twenty-five. I also took out the potion I made in the Bungo Stray Dogs world and asked him to distribute it to the swordsmen who had awakened their marks, so that no one would die young because of awakening their marks.
After learning about this, my lord asked me to develop more potions, not only to ensure that each member of the Demon Slayer Corps has one, but also to stockpile some in case of emergency.
Since the boss has spoken, what else can I say? He's providing all the materials anyway, so all I have to do is contribute my efforts. So I temporarily put aside my research and began to focus on making this potion.
It was four hundred years ago, and making potions wasn't as easy as it was in the world of Bungo Stray Dogs. I had to handle many medicines myself, which was not only troublesome but also time-consuming. Not to mention that the necessary pharmaceutical machinery was missing, and relying solely on the ancient methods of making medicine would have taken even longer. If I had known, I would have made several thousand vials back then.
Despite my inner complaints, my hands were busy. Following my boss's orders, I made sure every member of the Demon Slayer Corps, regardless of whether they had awakened their Demon Slayer Marks, was equipped with a potion. Those without Demon Slayer Marks could use it on themselves once they awakened, while those with awakened Marks would save it for their newly awakened comrades who didn't have the potion. Although this situation was unlikely to occur, it was truly admirable that my boss would go to such lengths for the lives of his subordinates, regardless of the cost. No wonder the Demon Slayer Corps had existed for over a thousand years; having a boss like this who was so devoted to his employees would have prevented it from going bankrupt.
By the time I had a whole warehouse full of medicine to eliminate the side effects of the marks, I was already seventeen years old, and it was finally time for the original song to get pregnant and die.
I'm currently a doctor in the Demon Slayer Corps, so of course I can't accept any free meals. As for pregnancy, well, Yoriichi and I aren't married yet, so such an unpleasant outcome is impossible.
Although I had thought about talking to Yoriichi about the future, he was always busy killing demons outside. Even now that he's become a Sun Pillar, he still comes and goes in a hurry, so I couldn't talk to him about such things at all. I always felt like I would be holding him back.
By the way, Iwakatsu also became the Moon Pillar, which is really unbelievable.
In the original story, Yoriichi and Kokushibo didn't actually spend very long time in the Demon Slayer Corps, leaving before they could be promoted to Pillar. Now, after three years in the Demon Slayer Corps and having killed countless demons, it's only natural that they would be promoted to Pillar. These two alone could easily sweep aside all other Demon Slayer members, including the Pillars.
Having completed the task assigned by my boss, I picked up my old research project again: how to free demons from Muzan's control. Those two demons are still imprisoned in the wisteria cage; they certainly don't lack test subjects.
I spent half the morning researching, and in the afternoon a heavily wounded swordsman from the Demon Slayer Corps was brought over, so I rushed to save him. It wasn't until dusk that I dragged my tired body back to my courtyard.
On the way, I met a member of the Demon Slayer Corps who told me that the Sun Pillar and the Moon Pillar had returned. This immediately made me lose all my fatigue, and I excitedly returned to our little courtyard.
I opened the shoji door of the tea room and saw two familiar figures kneeling there, playing Go. Hearing the sound, the two brothers, Tsugikuni and Tsugikuni, turned their heads simultaneously, but what they saw made me freeze instantly. Something was wrong! Something was very wrong!
Wearing the sun-shaped flower-shaped earrings, Yoriichi exuded the sharp and awe-inspiring aura unique to samurai. His piercing gaze was filled with an unreadable and majestic presence. This was no Yoriichi; it was more like Iwakatsu!
Then there's Yan Sheng, dressed in a purple samurai outfit, exuding an air of nobility. His eyes, which are calm yet slightly naive, are looking over at me. This demeanor is clearly that of Yoriichi!
The two of them, having nothing better to do today, swapped clothes like most mischievous twins do?
Neither Yoriichi nor Kokushibo would do something so pointless! Especially since even if their clothes could be swapped, their markings couldn't be! What on earth is going on?!
Continue read on readnovelmtl.com