After sending Teiji Moriya, a madman, to prison, Conan, who had been left out in the cold for concealing his identity, lived happily in the Maori house again, and began his ordinary life of living together in the same house and different rooms.

Every day after school, I would go home for dinner, and occasionally go to Dr. Asasa to see if there are any new gadgets and inventions, or go to Yuichi's to listen to the news of the Black Cloak and get kneaded. After piercing this layer of camouflage paper with Xiaolan, Conan, who had confessed, was even more eager to restore his body, after all, this body ...... Uh-huh, nothing can be done, can it?

As usual, they were lying on the desk and watching Ayumi, they were full of excitement to answer the childish questions of Mr. Kobayashi on the stage, and Conan, after changing a comfortable position, continued to crawl on the desk and thought alone.

"Yuichi called in the morning and said to surprise me today! I don't know what the surprise is, the laughter of the ghost beast makes me sick when I listen to it, what else makes me grasp the direction of my life, don't be sorry Xiaolan! It's all for my good! What the hell is this? It's nerve-wracking all day long! It's even more unreliable than my mother! Such a group of family members on the stall, God! Did I rob your wife in my last life? ”

Just as Conan was complaining with an unhappy face, the familiar voice of a bastard who had just been broken by him appeared in his ears.

"Then please leave it to Mr. Kobayashi! Our Family...... Hope you ......."

Conan, who was sure that he had heard correctly, immediately got up from his desk and stared at the door of the class with his dead fish eyes, but unfortunately his reaction was still a step slower, and he only saw a familiar back leaving the doorway.

"Is this a surprise for yourself? Interesting, I'd like to see what kind of medicine you sell in your gourd! Although I didn't see Yuichi's face, Conan, who could confirm who the owner of the voice was just now, couldn't help but show a smile at the corner of his mouth, and then after Mr. Kobayashi walked in with a cold girl with short brown wavy hair and light blue eyes, that smile slowly turned into shock.

"This ...... This is...... Could this be Yuichi's daughter? Oh, my God! Does Yuichi already have such a big daughter? This is the eldest niece I have never met? If that's what Yuichi surprised me, then well! I admit it! I was shocked! ”

Ignoring Conan, who didn't know where to go, in the midst of a kawaii exclamation full of amazement on the face of a little child, Conan's eldest niece was taken to the podium by Mr. Kobayashi.

"This is the gray original mourning classmate who is going to study with everyone from today! Let's get along with her! Then Gray Yuan-san sat in ......"

"Here! Over here! Teacher! Let Gray Plains sit here! Kojima Motota, who had been fascinated by Gray Plain's peerless appearance, swept the lunch box and snack bag on the empty seat next to him onto his table, and patted the stool next to him and yelled excitedly.

"Kojima-san's enthusiasm is so kind! Since this is the case, then Graybara-sensei ...... "After practicing alone at school on the eve of the parent-teacher conference and meeting Conan and a few of them exploring the secrets, Mr. Kobayashi, who took special care of Conan, smiled and prepared to satisfy Yuantai's interesting thoughts.

However, it is a pity that Gray Plains is not a first-grade child. After coldly replying to Mr. Kobayashi's ugly refusal, regardless of the sudden embarrassing scene of the whole class, he silently walked to Conan, who dominated the VIP rest area in the back row, with his schoolbag on his back.

"Can I sit here? Conan-san! ”

Looking at Gray Yuan's strange expression, Conan, whose brain was a little stuck and had not yet recovered from the shock, pulled out the bench of the desk next to him and replied blankly: "No problem! Big niece! ”

"Huh?" In the face of this sudden divine reply, Gray Yuanai, who originally looked like a goddess, couldn't help but collapse his own setting, is this a comic invited by the monkey? Director, are you sure this is the Kudo Shinichi who is holding the Zhizhu and scolding Fang Xuan? It's not the same as saying yes!

Silently put down the schoolbag on his shoulder, and after saying a word to Conan awkwardly, please give me more advice, some of the little sorrows who were hit by this god couldn't help but think of the ridiculous face.

"Miss Shirley! I didn't expect us to meet again! Don't be surprised! Even though you've become what you are, I can still recognize you at a sight! ”

"Hey, who am I, you ask? I'm the cousin you're looking for in Shinichi Kudo! Don't you know this identity? Then I'll change to a vest, how about this vest of the wine fairy? This is my code name in the United States, I believe you are no stranger to the Black Coats, right? ”

"What? Are you the wine fairy? You're actually Shinichi Kudo's cousin? ”

"Hey! Since you have changed your identity, is your name also changed! Can't the name Shiho Miyano be used anymore? Need I give you a name? Li dog or something, I'm still very good at naming names, can you pick any one? ”

"Gray Plains? Why isn't it called Ai Gray? The word mourning sounds unlucky! Let's call it Ai Graybara! What do you think? ”

"Is it really bad luck to call the name mourning?" Sneaking a glance at Conan, who had been labeled as an idiot next to him, Gray Hara, who was also not interested in the question of one plus one equals two, put the books in his schoolbag into the desk and climbed on the desk with his hands.

Seeing that Xiao Ai's sleeping position was the same as his own, Conan reaffirmed the identity of Gray Yuan, although he was a little surprised that Yuichi actually hid it so deeply, but for the sake of helping himself in the incident of Emperor Moriya a few days ago, Conan still decided not to pursue the rudeness of the eldest niece of the Yu family, and secretly glanced at Mr. Kobayashi on the podium and climbed to the desk with his head sideways.

"Eldest niece, why don't you call Kudo mourn? The name Gray Plains Mourning sounds weird! In particular, the surname Gray Yuan is a fight with my surname Edogawa! Moreover, Yuichi is too casual as a bastard, right? The word mourning makes people feel sad when they hear it! It's better to call it love! So? Your uncle, my name is pretty good, right? That's right! Did your father tell you? I'm actually your uncle, I'm ......"

"Shinichi Kudo! High School Student Detective! Sherlock Holmes of the Heisei era! Known as the savior of the island country police world, he became Kudo of Kanto and Hattori of Kansai and Hattori of Kansai! What do you think? My detective, are you satisfied with this answer? If you're satisfied, shut up and give me a lesson! And one last point, I think you misunderstood something, I don't have the slightest relationship with your Kudo family, please don't mess with me! Thank you! "Unexpectedly, Kudo Shinichi, a bastard and a chatterbox, listened to Conan's broken thoughts and those strange theories, and finally burst out unbearably, and exploded all of Conan's family wealth like a cannon.

And Conan, who was robbed of white by her, was stunned at the moment, and there was only one thought in his heart at the moment. "This isn't my eldest niece, so who is that? Don't...... But even Yuichi's daughter outside is my eldest niece! What's wrong? ”