Detective Conan: Orange-flavored summer

In the toilet of the venue.

"Are you here just to rummage through the trash can?" Huihara Ai pinched her nose and looked at Shangguan Chinatsu who was rummaging through the trash can with disdain, and said with disdain.

Shangguan Qianxia heard this and said without even looking up: "Of course, there may be a key clue in this."

"Oh, don't come to my bed tonight." Huibara Ai still pinched her nose and said to Shangguan Chinatsu with disgust.

"Found it!" Suddenly, Shangguan Qianxia took out a purple plastic wallet with a metal collar from the trash can.

Then, she immediately looked at Huiyuan Ai in a daze, and asked: "Xiao Ai, what did you just say?"

Huiyuan Ai opened the bathroom door and walked out, saying without looking back: "I said, don't get in my bed tonight!"

Shangguan Qianxia stood up. Hearing this, she nodded thoughtfully and said, "Okay, let's sleep in my room tonight."

"Okay." Haibara Ai stopped and said to Shangguan Chinatsu with amusement.

"So... kiss?"

"Now?"

"Ah."

Two figures slowly approached, and the delicate sound of water was heard.

……

"I found this in the glove compartment of Mr. Urata's car."

After saying that, Officer Gao Mu raised the bag in his hand and guessed, "I wonder if this is potassium hydroxide."

Officer Megure looked at the evidence bag held up by Officer Takagi, nodded, and said, "Thank you for your hard work. I just received a call from the forensic lady, saying that there was no trace of toxic substances in the drinks of the four of them."

"So, then we can..."

Inspector Megure said seriously: "We can conclude that this case is a self-..."

"I say, Officer Megure, how could you end this so hastily?"

Shangguan Qianxia's voice was clearly heard by everyone.

"Sister Shangguan, do you have any other guesses?" Inspector Megure attaches great importance to Shangguan Chinatsu. After all, he has seen Shangguan Chinatsu's reasoning ability.

"Of course! I believe the two great detectives have understood. I have also found what you are looking for. Let's start your reasoning."

When Kudo Shinichi heard this, a confident smile appeared on his lips. He said calmly and confidently: "Yes, Urata was actually murdered. Everything happened in front of the dark stage at that time. The murderer took advantage of one of his most insignificant habits."

He paused, then continued, "Besides, the murderer should still be holding that piece of evidence in his hand."

"That's right, just one coin can reveal its true form!" Hattori Heiji took over the topic and a 10 Sakura yen coin appeared in his hand.

He placed the 10-yen coin on the nail of his thumb, exerted force with his fingers, and threw it high into the air.

The 10-yuan coin seemed to have eyes. It drew a beautiful parabola in the air and then fell perfectly into the hat on the dancer's dress.

"But... no traces of poison were found in the drink cups of the deceased Mr. Urata and the other three people's drinks." Inspector Megure explained in a deep voice.

Shangguan Qianxia first took out the ten-yuan Sakura coin, and when she heard this, she said, "Of course you can't find it out."

"This..." Officer Megure looked at Shangguan Chinatsu in confusion.

"Just use ice!" Kudo Shinichi suddenly said confidently.

Shangguan Qianxia looked at him speechlessly. She had been planning to finish her words in one breath, but who knew that this guy still wanted to show off.

"The poison used by the murderer is potassium cyanate, which is extremely difficult to dissolve in ice water. All you need to do is make a small hole in the ice."

"Pour potassium cyanate into the center of the ice cube, and then use a small piece of ice as a lid and place it in Mr. Urata's drink glass along with the other ice cubes."

"This way, Mr. Urata can drink most of the drink before the poison dissolves."

Kudo Shinichi had a confident smile on his face and said with certainty.

Upon hearing this, Officer Megure asked in confusion: "Even if that's true, there should still be dissolved poison left in his cup, right?"

"Mr. Urata's drink cup lid is open, right? Do you know why?"

"Hey Kudo, why do you like to keep people in suspense? Mr. Urata opened the lid to eat the ice cubes inside!" Hattori Heiji first squeezed Kudo Shinichi, and then explained to Inspector Megure.

"Oh, by the way, officer, don't you often put leftover ice cubes in your mouth and crunch them?"

"I see!"

"You two are so hesitant." Shangguan Qianxia frowned and complained in dissatisfaction.

"Inspector Megure, are you wondering why the murderer carried the ice cube mixed with poison on him? It's very simple. All you need is this thing." After Shangguan Chinatsu said this, she took out the purple plastic wallet with a metal lock and handed it to Officer Megure.

"Takagi, take it for identification."

"Yes!"

"Forensic identification is bullshit. The murderer is Miss Mai. Look at this coin. Is it shining?"

"As for the method you're curious about, it's very simple. Just add potassium cyanate into both drinks and take it out before the ice melts!"

Mai was silent for a while, then smiled and said, "I didn't expect you to be more decisive than that high school detective Kudo Shinichi. You didn't even give me a chance to struggle."

"Did you already know the modus operandi from the ice cubes in the drink?"

Shangguan Qianxia heard this and nodded in affirmation: "Well, I have already begun to doubt you since you answered Mr. Urata's habit."

"Hahaha, it's my fault that I met three famous detectives today." Mai said with a sigh.

"Mai, why…"

"His behavior is not consistent with that of a doctor."

Noda looked puzzled and asked, "What's going on?"

"I think you should also know that he originally planned to publish a paper at this conference, right?"

"Yeah." Noda nodded in response.

Mai saw Miss Noda nod, and she continued, "However, there is a case that is enough to overturn Dr. Urata's theory. The patient was in our hospital at the time, but unexpectedly, the patient's condition suddenly worsened and he died just like that!"

"It's as if this exception never existed."

When Noda heard this, he speculated in disbelief: "Then, could it be Dr. Urata?"

"That's right! It was Dr. Urata who prescribed the wrong medicine for the patient, which caused the patient's condition to deteriorate rapidly. He did this just to protect his weak and crappy theory!" Mai said with a gloomy face and a vicious tone.