3-chome-25, Beika-chō, Tokyo, Japan.
This is a detective agency. The owner, Yumiya Teru-sama, passed away due to a heart attack a month ago. Despite immediate rescue efforts, his life could not be saved.
His only son, Yumiya Akira-kun, ignored the rumors and resolutely gave up his opportunity to study at Teitan University, choosing instead to inherit his late father's detective agency.
...
Yumiya Akira-kun browsed through the information in his mind and sighed, rubbing his forehead helplessly.
"Beika-chō... Teitan University..." he murmured, glancing at the newspaper spread out on his desk.
[The Sherlock Holmes of the Heisei Era Solves Another Mystery!]
Below the bold headline, a large photograph occupied nearly half the page.
In the picture, a handsome young man with a confident smile took up three-quarters of the frame. His expression exuded self-assurance, and the gleam in his eyes seemed to burst from the black-and-white newspaper.
"Kudo Shinichi-kun... So this really is the world of Detective World..." Yumiya Akira exhaled slowly, calming his fluctuating emotions.
To outsiders, Yumiya Akira appeared to be the introverted and quiet young successor of the detective agency. However, only he knew the truth: a soul from another world now inhabited this body.
Qin Ming, an ordinary young man from modern-day society, had a stable job and a comfortable, if uneventful, life. Though his parents had passed away early, he had good friends and enjoyed reading detective novels and suspenseful stories in his spare time. As a household name, Detective World was naturally among his favorites.
Never did he expect that he would one day find himself transported into that very world.
When Qin Ming first realized he had transmigrated, he felt lost. Though his previous life was neither extraordinary nor dull, he had stability. Yet, after one drowsy, dreamless sleep, he woke up in an unfamiliar setting, burdened with a flood of foreign memories.
It didn't take long for him to understand his situation: he had become Yumiya Akira, a detective in the world of Detective World.
After some thought, Yumiya Akira weighed his options:
"First, I could ignore the plot and reapply for my third year of high school, aiming once more for Teitan University. With my retained knowledge and a year of dedicated study, getting accepted again wouldn't be an issue. From there, I could secure a stable job, steer clear of that Shinigami-grade elementary school student, and live quietly."
"Second, I could follow the original owner's path and become a detective, involving myself in the story, leveraging my knowledge of future cases, and gaining fame as a renowned detective."
After careful consideration, Yumiya Akira dismissed the first option. Japanese society's rigid class structure, which was evident in the anime itself, meant that securing a good future through conventional means might be more challenging than in his previous life. Moreover, avoiding the plot would waste the advantages of his foresight.
And if he had already come to the world of Detective World, would it not be a waste to just study and work normally?
Detectives and mystery novelists held unusually high status in this world. By participating in cases, he could not only experience things beyond his previous life but also secure a stable livelihood.
Of course, there were risks—murders, robberies, hijackings, bombings, thieves, and even smoke bombs, tear gas, flashbangs, and cross-dressing scenarios.
Most importantly, engaging with the story meant inevitable contact with the Black Organization.
However, foreknowledge allowed him to predict and avoid many dangers. Given the crime rate and frequent bombings in this world, doing nothing might be just as unsafe.
With all that in mind, Yumiya Akira resolved to embrace the detective path, using his knowledge of future events to build his reputation.
"Since I'm going to get involved, let's confirm the timeline first..."
He picked up the newspaper and checked the date.
"Tuesday's article aligns with the murder of Yamazaki-shachō from Episode 1. Today is Wednesday. According to my memories, there are no holidays this week aside from the weekend. That means Kudō Shinichi-kun and Mōri Ran-san will only go to Tropical Land on the weekend—probably Saturday."
"If Kudō-kun hasn't been transformed into Edogawa Conan-kun yet, I can approach him beforehand, establish rapport, and gain his trust. That way, once he becomes Conan-kun, it'll be easier to get involved in cases."
With a decision made, Yumiya Akira searched the filing cabinet for records on Kudō Shinichi's past cases.
At first, he was puzzled as to why his late father had collected information on another detective. But it made sense—Kudō Shinichi's reasoning skills were worth studying. His case-solving methods could provide valuable insights.
To make a good impression, Yumiya Akira planned to engage Kudō Shinichi in discussions about past cases, showing admiration for his deductions and a shared interest in Sherlock Holmes. Given Kudō Shinichi's pride and obsession with Holmes, this approach would surely earn him favor.
As he sifted through the thick stack of clippings and notes, he marveled at the sheer number of cases Kudō Shinichi had solved—hundreds, at least, from the records his father had gathered alone.
Then, something caught his eye.
A newspaper clipping contained the usual praises, but one particular line stood out:
[Kudō Shinichi is not only a famous detective who has solved countless cases, but his sister also has remarkable talent. She joined the karate club in her first year of high school and won the National High School Women's Karate Championship that same year!]
"Kudō Shinichi... has a sister?" Yumiya Akira narrowed his eyes, his mind racing.
According to his inherited memories, the original Yumiya Akira had indeed encountered Kudō Shinichi's sister before.
This memory surfaced because Yumiya Akira had been the captain of Teitan High's Karate Club in his third year, securing second place in the National High School Men's Karate Championship.
As for the champion?
Kyōgoku Makoto, the "Prince of Kicks."
"The original me actually fought one of Detective World's top martial artists to a standstill? Damn, this body is stronger than I thought..." Yumiya Akira mused.
But back to the main issue—if Kudō Shinichi's sister truly existed, two possibilities arose:
He had not entered the original Detective World world, but rather a parallel variant where Kudō Shinichi had a sister. Kudō Shinichi's sister was another transmigrator like himself.
If the second scenario was true, it meant another wildcard had entered the equation.
"No matter which it is, this is a significant variable. Now, even more reason to approach Kudō Shinichi-kun..."
After reviewing the remaining files, Yumiya Akira neatly reorganized them, placing the information on Kudō Shinichi's sister at the top.
With a red pen, he boldly underlined a name.
It was time to investigate further.
Translator's Note:
Hello, dear readers! 🌟
Thank you for checking out this novel! This is my first time trying my hand at translating, and I'm just a newbie who decided to give it a shot. I appreciate your patience and support as I work to improve. If you notice any mistakes or have any suggestions, feel free to let me know!
I hope you enjoy the story, and let's go on this journey together! 🚀✨
Happy reading!