He's in Detective Conan, and he's the mastermind behind everything.

Did Kudo encounter this situation every day before? How did he manage to suppress his embarrassment?

“Someone deliberately set the fire, and the murderer is this old lady.” Ying Sheng nodded and pointed to a corpse on the ground. “She’s not actually an old lady. Judging from the skin on her arm, she’s probably only around forty years old.”

Although Ying Sheng had a misunderstanding earlier, the old lady stopped pretending and walked briskly. If he couldn't tell that she was actually a young person, then all those eyes on his face would be wasted.

The old policeman rushed to verify and found that it was exactly as Ying Sheng had said. Recalling the situation when he came to investigate four years ago, he immediately deduced the truth.

"She is Mutsumi Nishikawa, a missing housekeeper of the Mamiya family!"

Ying Sheng, unaware of what happened back then, stepped aside, neither commenting nor refuting.

Whether it was the housekeeper or the old lady, given her status, she could have easily poisoned the food of everyone in Shita four years ago.

The veteran policeman reported the incident to his superiors, requesting an investigation within the police system. He then immediately began searching the castle to find evidence.

In the end, nothing was gained.

The old policeman ran into the courtyard to find Ying Sheng for help, only to find him leaning over the second-floor windowsill shouting down:

"Kyogoku-senpai, a soldier cannot retreat."

The old policeman hurriedly turned around to look, "Bang—!!!" A heavy stone chess piece rose from the ground, moved forward one space, and fell heavily back down.

"Gulu——"

The old policeman's Adam's apple bobbed. What kind of monster is this? Are young people these days so terrifying?

"Mizuki-kun, this is going too far."

Bang——! ! !

Another muffled thud was heard, and the old policeman quickly looked over. It was the girl who had volunteered to help the police go up to the attic to scout the way. At that time, the police were at a loss and wanted to call for backup. She had really helped a lot.

"Huh? Xiaolan, did you actually figure it out?" Ying Sheng asked curiously from the second floor.

"Didn't you explain how to solve the code before? I'd be too stupid if I still couldn't figure it out." Xiaolan jumped onto the queen piece she had just moved and surveyed the entire board. "J, O, K, I knew it, you were trying to spell out the Joker, weren't you?"

Ying Sheng retorted, "How could that be? These letters are clearly beyond the range of AH."

Xiao Lan snorted: "You changed the way you refer to letters. You use two numbers to represent one letter. The sum of the row numbers corresponding to the two black pieces in column A is 10, which corresponds to the tenth letter of the alphabet, J. The others are the same."

"objection."

Ying Sheng retorted again: "There is only one piece in column C, on the third square. According to your logic, shouldn't it be C? JOC, you old kid, although it's a bit of a joke, it's not a big deal."

Xiaolan smiled confidently: "But that piece is the King, the code K. It's JOK, not JOC."

"Haha, it's just a coincidence, I didn't think much of it." Ying Sheng looked down at the old policeman with a strange expression. "Officer, is there something you need?"

Changing the subject is tantamount to admitting defeat, Xiaolan chuckled to herself, and gave Yingsheng a victory sign.

Ying Sheng didn't want to look, but she still caught a glimpse of it while stealing a glance, and helplessly shrugged.

"V, 22, you need to place four pieces."

"Huh? Eight plus seven plus seven, isn't that three?"

"Idiot, are you going to put two pieces in one square?"

"Yes."

Xiao Lan suddenly realized what was happening, jumped down, and continued setting up the chess pieces.

Bang——! !

The old policeman wiped the cold sweat from his forehead, and after opening and closing his mouth several times, he finally uttered his original request.

Police believe there is something wrong with the castle; there is at least one secret room where Mutsumi Nishikawa's personal belongings and passport are hidden.

However, even with Katsuo Tabata's guidance, they found nothing and had to seek help from the detective who had previously solved the mystery.

After saying all this, as if the police were somewhat incompetent, he added, "We have discovered evidence through immigration control that Mutsumi Nishikawa has repeatedly gone to Seoul for cosmetic surgery to appear older. We have also discovered a place that appears to be a secret passage, but we cannot find the mechanism."

"That's easy, just break it open with force, Kyogoku-senpai," Hotaru called out.

The old policeman only felt a blur before his eyes, and a dark-skinned young man descended from the sky and appeared in front of him.

"Officer, please take me there."

Kyogoku Makoto's eyes lit up; he was more than happy to be able to smash the wall openly and legitimately.

"..."

The old policeman was speechless: "Mr. Shuiyue, this castle is your property. Are you sure you want to damage it?"

"..."

Ying Sheng was speechless: "Is there a vampire hiding in this castle? I can't even stop myself from going in?"

"Well, mainly because Mr. Mamiya has no children, and you were the one who solved the mystery, so..."

"Honest, too honest."

Ying Sheng interrupted, "Can't your Ebina City Police Department just take this place under public control and then auction it off? You'd have your salary for the next ten years. Sigh, it's really disappointing that you live in a capitalist society."

"..."

Kyogoku Makoto silently turned around and looked back, not knowing what to say to Hotaru.

I get the feeling that you seem quite skilled at it.

The old policeman was silent for a moment, then said weakly, "Is it too late for me to turn it back to the authorities now?"

"I'm sorry, it's too late. Because you said there's a secret passage here, I've already planned to develop it into a theme park." Ying Sheng looked at Xiao Lan, who was busy arranging chess pieces. "Miss LOVE, would you mind helping to take the classmates to play a puzzle-solving game?"

Bang-!

As the chess piece was placed, Xiaolan blushed and didn't even look at Yingsheng.

"I do not know what you're talking about."

"Addition, subtraction, multiplication, and division—four letters." Ying Sheng smiled slightly. "Me too..."

"Don't say that! It's just a 'LIKE' at most!"

Xiao Lan interrupted, blushing, and quickly ran into the hall to gather the classmates who were looking around.

Hotaru sighed sadly, glanced at Makoto Kyogoku who was smiling, and slightly pursed his lips.

"Kyogoku-senpai, even your Morse code can't fool me."

Kyogoku Makoto's expression changed, and he immediately turned his head away: "Mizuki-kun is overthinking it."

Ying Sheng chuckled and was about to speak when he saw Suzuki Sonoko arriving late from the direction of the gate, so he kept quiet.

The older policeman asked somewhat uneasily, "Will that young lady be able to handle it?"

Ying Sheng shrugged: "You saw the explanation just now. Xiao Lan is super amazing now, she just hasn't found the right stage yet."

"..."

The veteran police officer felt that using the word "stage" to describe a murder case was rather inappropriate, but considering that high school detectives seemed to be all like that, he could only nod his thanks and enter the hall to follow Xiaolan's footsteps to explore.

There's nothing we can do; the police are just used to being lazy.

The castle gates were open. As Yuanzi walked into the courtyard, she looked up at Yingsheng by the second-floor window.

"Where's Xiaolan?"

"There are secret passages inside where you can lead police investigations, and there might even be treasure hidden there," Ying Sheng said.

Yuanzi's eyes lit up, and she took a few quick steps inside before stopping again: "Why aren't you going?"

Ying Sheng reached out to the sunlight that was finally falling from the sky, feeling the long-lost warmth in his palm, and let out a contented groan.

"I'm photosynthesizing, don't disturb me."

"...How are you feeling?"

"not too good."

"Your cold isn't completely gone yet?"

"Lack of chlorophyll".

"……asshole!"

Sonoko stormed into the hall, no longer wanting to deal with this annoying guy.

Ying Sheng looked at Kyogoku Makoto, who was standing on the grassy area with the chessboard, and saw that he was not saying a word, but just gazing at the floating clouds in the sky. He sighed softly.

How many lengths (long and short) is the 'O' in Morse code?

"Mizuki-kun!"

Makoto Kyogoku suddenly turned his head, his eyes blazing with fighting spirit.

"Let's have a friendly spar!"

"Can I say no?"

"why?"

"Because you're a coward."

A flicker of emotion crossed Kyogoku Makoto's eyes, but he remained silent.

Ying Sheng clicked his tongue, then leaped down, landing on the black king chess piece.

"You're a top-tier martial artist, shouldn't your will be extremely firm? What kind of talk is this, being so hesitant and indecisive? Your fists will cry." Ying Sheng beckoned to him, "Let's fight on chess pieces, whoever falls off first loses."

"it is good!"

Makoto Kyogoku leaped into the air and landed on the white knight chess piece, his gaze immediately becoming serious.

Hotaru chuckled: "Sonoko and I used to date."

As he spoke, he delivered a flying kick!

Kyogoku Makoto reacted a beat too slow and quickly leaned back to dodge. As soon as he bent over, he realized something was wrong. He forcibly twisted his body in mid-air, reached out and grabbed the spear in the hand of the pawn next to him, and with a gentle hook, he landed on the pawn's head.

Firefly, perched atop the black bishop's head, turned and launched another attack.

"But we broke up a long time ago!"

Kyogoku Makoto raised his arm to block, his gaze sharp.

"why?"