Chapter 18 recounts her story with President Fukuzawa about her relationship with Yuki...

President Fukuzawa Yukichi looked at the three of us, who were behaving exceptionally well, with a very troubled expression. Finally, he sighed with great composure and said in a gentle voice, "Ranpo, Yoriichi, and Uta, the three of you should get along well from now on."

I quickly made a promise, "Don't worry, teacher, we'll get along well, right, Yoriichi?"

As we were talking, I gently squeezed Yoriichi's hand. He reacted a beat late and nodded in agreement, but still added, "As long as he doesn't bully Uta."

I sighed inwardly, thinking how worthy he was of being the club president. Just one look from him was enough to make the willful Ranpo so obedient. Only he could do that in this world.

To ease the tension, I gave Ranpo a cute smile and said in a light voice, "Big brother, you really are the world's number one detective! You're so amazing! You were able to figure out right away that I'm not a real cat. How did you deduce that?"

Ranpo was quite pleased with my compliment, and said in a cheerful and extremely proud voice, "Does this even need reasoning? You can tell at a glance! How could a real cat dare to sit on the president's lap? It's obviously fake!"

I couldn't help but look at President Fukuzawa with sympathy. Although the president appeared as serious as ever, his shoulders swayed almost imperceptibly, which clearly showed that his words were quite hurtful!

"So how did you figure out I was a girl?" I asked immediately. Seeing that Ranpo seemed too lazy to explain, I quickly replied, "From now on, you can have all my snacks."

Ranpo was indeed moved. He really went all out to get my dagashi (sweet treats). He patiently explained, "On the way back, I saw the Port Mafia searching for two children. When I went inside, I saw the markings on Yoriichi's face and knew he was the boy they were looking for. The other girl should logically be with Yoriichi. And coincidentally, the president had a very human-like and suspiciously suspicious cat sitting on his lap. Isn't the answer obvious? I can tell something this simple without even wearing the glasses the president gave me. From now on, all your dagashi are mine. Don't forget."

That's when I realized why I had been exposed. I was also amazed by Ranpo's intelligence. No normal person would think that a cat was actually a human, but he could figure it out at a glance. As expected of Edogawa Ranpo, there are no secrets in front of him.

Just then, Fukuzawa, the president of the company, noticed that the newly enrolled students had offended the mafia and asked with a serious expression, "Yoriichi, Uta, why is the Port Mafia searching for you two?"

I quickly put on an innocent face and said, "It's probably because Yuan and I accidentally showed up at their crime scene."

Yoriichi added from the side, "I cut off the head of a yokai girl."

"Dr. Mori was there too?!" As expected of master and apprentice, Fukuzawa Yukichi had once referred to his troublesome junior brother's humanoid ability as a monster, so he immediately made this guess, but then said with certainty, "He wouldn't go so far as to kill the child."

Edogawa Ranpo, licking a lollipop, said, "That Dr. Mori probably wants to take the two of them back to the port and train them to become members of the Mafia."

Upon hearing this, Yosano Akiko, who had been silent until now, changed her expression drastically. She probably thought of her own experience of being forced by that heartless doctor and immediately said, "President, we can't let Mori Ougai succeed!"

"This is natural; the principle of teachers protecting their students is an irrefutable truth at all times!"

President Fukuzawa's voice was calm and firm. He made the decision to protect me and Yoriichi without hesitation, even if it meant going against the Port Mafia. He was so cool.

"Thank you, teacher. I'm so sorry to have troubled you." I thanked him with great gratitude. Although I knew that President Fukuzawa would do this, I was still deeply moved to hear his heartwarming words.

As the Armed Detective Agency that governs the twilight, it is precisely because of the presence of President Fukuzawa, who serves as a pillar of strength, that so many like-minded companions can gather together to move forward!

"Teacher, I want to apologize to you." I spoke again, my voice full of apology. "Actually, I knew your identity beforehand, which is why I brought Yoriichi home with you."

“No need to apologize. I’m glad I passed by there yesterday and received two good students.” Fukuzawa-sensei’s light green eyes looked over, and although his expression was as serious as ever, his gaze was exceptionally gentle, making one feel exceptionally at ease.

I wish I could turn into a cat and roll around on my teacher's lap, then get my belly rubbed – that would feel so good!

Having opened the door to a new world, I couldn't help but want to become a cat. I held back because of the president's reputation. Then, I said apologetically, "Teacher, there is one more thing I need to tell you, which is the origin of Yoriichi and me. It is such a pity that we cannot stay in this world for long to listen to your teachings."

My words caused Fukuzawa-sensei's expression to change slightly. Edogawa Ranpo, who was standing next to me, took out his glasses, put them on, looked at Yoriichi and me, and then stated the conclusion he had deduced.

"Yoriichi was actually from the Sengoku period, and the song comes from another world. How interesting!"

I admire Ranpo's reasoning ability immensely. It's not surprising that he deduced the correct answer from Yoriichi's clothing and Hanafuda earrings. What's surprising is how he knew that I and Yoriichi were not from the same world. The insight of a great detective is truly terrifying.

Both President Fukuzawa and Akiko Yosano were shocked when they heard Ranpo's deduction. It's no wonder, no one would believe such a fantastical thing. It's just that Ranpo's deductions have never been wrong, making it unbelievable yet impossible to deny.

Since Ranpo has already started, I'll continue the conversation and begin to tell you about my and Yoriichi's origins...

"The world I live in is completely different from this one. It's a world of ninjas, and I myself am a medical ninja. Well, my affairs are irrelevant; the real problem lies in Yoriichi's world. His world is plagued by demons that eat people. These man-eating demons were once human, but were transformed into monsters that fear the sun and feed on human flesh after being given blood by Muzan Kibutsuji, the progenitor of demons."

Everyone in the room listened intently, even Yoriichi, who usually seemed indifferent to the outside world, opened his round eyes wide and listened very attentively. Even his handsome face, which was usually expressionless, showed worry, clearly indicating that he was concerned about his brother, Tsugikuni Iwakatsu.

Sigh, this brother-obsessed guy is hopeless.

I sighed and continued. Fortunately, Bungo Stray Dogs doesn't restrict me from revealing the plot of Demon Slayer, otherwise I would have coughed up blood.

"Yoriichi existed to save that world. According to the established history, although he failed to kill the Demon King, he left behind the Breath of the Sun. Swordsmen who practiced the Breathing Technique in later generations used it to destroy the Demon King. However, now an accident has occurred. Someone from my world entered Yoriichi's world, causing a butterfly effect that prevented a swordsman from being born four hundred years later. Because of that swordsman's absence, the operation to fight the Demon King failed miserably, and that world was completely plunged into darkness ravaged by demons."

"To avoid such a future, the world consciousness of the world Yoriichi is in and the world consciousness of the world I am in have reached an agreement to send me over to assist Yoriichi in slaying the Demon King. As long as Muzan Kibutsuji dies, all the demons he has transformed will die, and the world will be saved."

"Is this why I met the song?" Yoriichi murmured, looking at his sword-wielding hand. Finally, he clenched his fist and looked at me. A glimmer of light appeared in his usually indifferent and empty eyes, as bright and dazzling as the sun. "How can I kill the Demon King?! I feel it. This is the mission I was born to fulfill."

Without the restrictions, I easily said things that I couldn't say in the Demon Slayer world, and I felt a sense of liberation.

"There's no need to ask Muzan Kibutsuji why he's alive. That guy sees himself as a natural disaster; he has no heart. Just kill him directly. However, Muzan is very good at surviving. If he senses something is wrong, he'll split himself into 1,800 pieces to escape. According to his original destiny, Yoriichi fought with all his might to cut off 1,500 pieces, which led to the Demon King's escape. Now that I'm here, the remaining 300 pieces of flesh will be mine, and I'll definitely make Muzan die 400 years earlier!"

Even so, I am still very confident that Yoriichi can kill Muzan on his own. In the original story, he was still so powerful even after wasting ten years. Now that he has been training hard for ten years in advance, killing Muzan will be a piece of cake.

Yoriichi thought so too. He held my hand and said very seriously, "You don't need to train hard. I will practice swordsmanship diligently in the future. When the time comes, I will cut down 1,800 pieces of Muzan and kill him completely."

"I believe Yoriichi can definitely do it!" I smiled, raising my eyebrows, eagerly anticipating that day when I could go home for my brother's wedding.

With a furrowed brow, President Fukuzawa spoke up at this moment, "Yoriichi, Uta, how can you two get back?"

Seeing the president's worried look on my and Yoriichi's faces, I smiled and said, "Don't worry, teacher. I saw the world consciousness in my dream last night. It knows that we have come to this world and is trying to come and rescue us. I believe we will have news soon."

President Fukuzawa breathed a sigh of relief, and Ranpo, who was chewing his lollipop, suddenly said to me, "You know the future fate of this world, don't you?"

"Ah, I know, but I can't say it,"

To be honest, some unseen force prevented me from speaking. If I were in the Demon Slayer or Naruto world now, I could tell you the story of Bungo Stray Dogs.

Come to think of it, I can say my real name now, but it doesn't really make any sense. I've gotten used to hearing Yoriichi and the club president call me "Song".

"No need to answer, just listen carefully to my question!"

After swallowing the lollipop, Edogawa Ranpo asked expectantly, "Is the president my favorite?"

Me: "…………" Of course! After all, we have a father-son relationship.

"Okay, I understand." Ranpo was very pleased to have gotten the answer by interpreting my micro-expressions, and then asked, "Will the president get married in the future?"

Me: "…………" Of course not! With subordinates from the Armed Detective Agency keeping him busy, how could he possibly have time for romance?

Speaking of which, the teacher looks so serious that no girl would dare to approach him, right? It seems like Fukuzawa-sensei is destined to be single like Kakashi-sensei!

I couldn't help but worry about Fukuzawa-sensei's personal life. Kakashi-sensei's love life is completely hopeless. I wonder if there's any way to salvage this situation?

A note from the author: