Ke Xue: Ai-chan and I have an agreement

"Well, how about we get back to the case?" Hattori Heiji felt his throat a little dry, and he cleared his throat uncomfortably.

Shiina Yuichi didn't say anything else. Some things are better left unsaid.

"Okay, okay." Shiina Yuichi retracted his gaze, then focused his eyes on Hattori Heiji, looking at him with sharp eyes.

"Would a normal person take a sip of coffee before adding creamer?" Shiina Yuichi suddenly asked this question out of the blue.

What do you mean? When Hattori Heiji heard what Shiina Yuichi said, he was stunned for a moment, then tilted his head, expressing his confusion.

However, he quickly reacted and looked at Mai Hongue who was chatting with Officer Takagi.

"I see..." Hattori Heiji muttered to himself.

"But this can't be used as evidence. Even if the venue was pitch black at the time, there is still a difference in the taste of Coke and coffee."

Hattori Heiji frowned, as if he was not satisfied with Shiina Yuichi's discovery.

However, Shiina Yuichi did not care about Hattori Heiji's doubts. He just raised the corners of his mouth slightly, revealing a mysterious smile.

"No, under normal circumstances, someone who is used to drinking iced Americano would not check what is in the glass."

"Because they have become familiar with it subconsciously, and have even formed a subconscious behavior pattern. This is what we call a habit."

"It's just like washing your hands before eating and after using the toilet."

“And the method used in this case also took advantage of people’s habits.”

"Habit?" Hattori Heiji frowned, seeming a little puzzled.

"That's right, do you still remember the drink cup that fell next to the deceased's body?" Shiina Yuichi suddenly asked again.

Hattori Heiji nodded, trying to recall the scene at that time, "I remember that the drinks inside were basically finished."

Shiina Yuichi shook his head, "Your observation is not detailed enough, remember? The ice cubes in the drink cup..."

Ice cubes!

Shiina Yuichi's words were like a bolt of lightning, splitting the fog in Hattori Heiji's eyes and making him wake up instantly.

That's right!

There was basically no ice in the drink at that point.

If they melted into water, there would definitely be water stains in the drink cup.

But there were no such traces at the scene, and no similar signs were found around the deceased.

So where did all the ice go?

The answer is obvious: it could only have entered the dead person's stomach.

Following Shiina Yuichi's line of thought, Hattori Heiji suddenly felt a bright future ahead of him and began to have bold speculations in his mind.

After drinking the Coke, the deceased, Kohei Urata, perhaps felt that it was not satisfying enough, so he opened the lid of the cup and chewed the remaining ice cubes in the drink like a snack.

Of course, this has something to do with the weather.

But more often than not, cola and iced Americano are drinks that taste better when ice is added.

Moreover, many people now have the habit of chewing the ice cubes in Coke after drinking it.

With just a little investigation to find out whether Urata Kohei has this habit, we will know whether Shiina Yuichi's inference is correct or not.

Sure enough, what Kudo said was right.

Shiina Yuichi is such a strange guy.

Although there is no evidence for the reasoning, it somehow makes people feel convinced.

He felt confidence in Shiina Yuichi, a confidence that could not be expressed in words.

Of course, he had no way of knowing that it was Shiina Yuichi's self-confidence that made him linger on the edge of hell again and again.

Although, Hattori Heiji somewhat agreed with Shiina Yuichi's reasoning.

However, there are still some doubts in the case.

"Even if it's really as you said, how did that person poison me?"

Hattori Heiji asked again.

Shiina Yuichi glanced at Hattori Heiji and felt helpless.

That's why he hated detectives who always liked to get to the bottom of things.

In comparison, Sakai Kuroo is so cute and never asks about the details of Shiina Yuichi's actions.

He is a very obedient and good brother.

It's like... vodka?

Shiina Yuichi couldn't help but shiver.

Oh my god, have I become Gin?

Then, Shiina Yuichi felt a chill and shook his head, getting rid of the thoughts in his mind.

He turned his attention back to the case at hand.

"It's actually very simple. It's still the habit I just mentioned."

"Just pretend to add creamer to your drink at the stall, and then put the poison into the cup."

Shiina Yuichi shrugged, "This way it won't be too abrupt, and it won't arouse suspicion."

"But she didn't add creamer to the drink, did she?"

Haibara Ai was also attracted by Shiina Yuichi's reasoning and couldn't help but join in.

Shiina Yuichi listened to Huihara Ai's question and continued to explain, "It's simple, because she found out it was cola after adding the poison."

"That's why she didn't put creamer in her coffee."

"After all, Urata Kohei might not drink cola with creamer in it, so her plan would be wasted, right?"

"And do you remember that man's testimony?"

"She said there were too many people at the time, so she asked Mr. Mitani and the others to take seats."

"Note that the crowds she mentioned don't just refer to the people looking for seats in the venue, but also the people queuing up to buy drinks and snacks."

Shiina Yuu paused and continued, "But when she returned to her seat, there was not much time left before the play started."

"Look again, where she was at that time."

Hattori Heiji and others followed Shiina Yuichi's gaze.

Hong Shang Mai's position was not far from the stand selling drinks.

"I understand, you mean the time is wrong?" Haibara Ai replied quickly.

Shiina Yuichi's eyes lit up and he couldn't help but nod, "Yes, it took too long for her to get back to her seat after buying the drink."

"As for the evidence..." Shiina Yuichi turned his head, "Do you remember when we ran into each other before?"

"I remember, you seemed to have bought coconut milk at that time." When Hattori Heiji thought of this, he couldn't help but feel resentful towards Shiina Yuichi.

“Yes, but there were very few people queuing at that time, and I rushed back to the guest area at the other end of the venue before the show started.”

After listening to what Shiina Yuichi said, Hattori Hei took a deep breath and was very impressed.

"So that's why she returned to her seat with her drink just before the play started."

"It is to prevent the deceased from changing the drink even if he finds it is not right. In the dark environment, it is very troublesome to go back and forth."

"Is it right?"

Shiina Yuu nodded.