And so, the puzzle-solving began again.

"Well, I was thinking about it earlier and I think this should be the clue."

Saying that, Ryuto took out the key that was sent with his phone, a key that had no distinctive features and was as ordinary as ordinary could be. But it became a clue precisely because of its ordinariness.

Hiyori was quite confused by this.

"This key?"

"Yes, since we've already determined that it's a subway station, this key could possibly be for a locker in one of the stations."

"A locker?"

"Well, as the name suggests, it's a cabinet for storing things."

"I see."

Ryuto couldn't help but admire the professional explanation. Maybe I should consider writing a dictionary in the future.

"And based on this clue, I did a little research."

Saying that, Ryuto took out his phone again, showing a news article.

"Recently, due to the construction of a new railway line, they also replaced the lockers in the stations."

"If that's the case, then there's no clue anymore, right? Because this key looks really old."

Since they were all replaced, there's no way to know which station's locker key this is. And since the lockers were replaced, it's only logical that the key was replaced as well, so this key must be useless.

"That's right, just like you said, Hiyori. But there is an exception."

"An exception?"

Saying that, Ryuto opened another news article.

"On the day when the lockers were being replaced, someone at one of the stations stored something extremely confidential. There was opposition to the project, and in the end, it couldn't be replaced. Well, after all, replacing the lockers meant opening them, so it's only natural that the project was delayed. Although I don't know who the important person is, thanks to that person, and coincidentally, that station is one of the three stations we're investigating."

"In other words, this key is for that station."

Hiyori said with delight.

"That's right, and that station is Chikama Station."

At the same time, a voice came from the speakers.

"Ladies and gentlemen, the train is about to arrive at Chikama Station. Passengers who wish to disembark, please get ready."

Hearing this, both of them stood up almost simultaneously.

"The timing is perfect, let's go."

"Okay, Lord Ryuto."

After getting off the train, the two quickly found the lockers.

"As expected, this locker is very old, it should be right."

"So, which one exactly is it?"

Hiyori looked at the many compartments in front of her and became confused.

"As for that, the code also mentioned it."

"Really?"

"Yes, it said that the treasure is located at the three-and-a-half inches under the dragon's chin."

Well, I personally don't consider this as treasure.

"Three and a half inches?"

"Yes, I think so."

"But how do we interpret this?"

Hiyori couldn't help but tilt her head and think.

"Both 'inches' and 'minutes' are units of measurement for length, and 'ten minutes' is equal to 'one inch'."

"...Is there any relation to this?"

"If this represents the compartments."

"Compartments? So, 'ten minutes' being 'one inch' means it's the 35th compartment? But there aren't that many compartments here."

It seems like they've hit a dead end, and Hiyori once again became lost.

Is this person really not good at this? Ryuto could only sigh at this.

"In fact, the key point of 'ten minutes' being 'one inch' is not about 'one inch' being 'ten minutes'."

"?"

"It should be understood as 'end'."

"End?"

"Yes, the measurement 'minutes' keeps increasing until it reaches the limit, and when it reaches 'ten minutes', it becomes 'one inch', and the minutes start counting again."

"?"

Upon hearing this, Hiyori still looked puzzled.

"In other words, the standard for 'minutes' to convert into 'inches' is no longer ten, because the limit is different now.""So, how much is it?"

"Since three inches and five points refer to squares, according to common sense, after finishing a row, it will naturally move to the next row, and at this point, 'points' will be converted into 'inches', and the value of 'points' will reset to zero, which means that this three inches and five points should be referring to the square in the third row, fifth column."

"Oh, I see. So, it's this one."

Thus, Hiyori quickly found the square in the third row, counting from top to bottom, and the fifth column, counting from left to right.

This action was indeed fast, worthy of praise.

But...

"No, that's not it."

"Ah, really?"

Saying so, Hiyori double-checked once again.

...

"That's right, Lord Ryuto, this is indeed the square in the third row and the fifth column."

"No, I'm not saying you counted it wrong, but your counting method is flawed."

"Flawed counting method?"

Hiyori expressed her confusion towards Ryuto's words.

"I only mentioned that it is the square in the third row and the fifth column, I didn't say it's that one."

"Is there a difference?"

"Well... in the end, this is actually just a trap."

"A trap?"

"Yes, a trap that misleads players, as mentioned in the code. If you get it wrong, it will cause big problems."

Hiyori, who couldn't comprehend it at all, asked.

"So, what should we do then?"

"Actually, the code mentioned it at the beginning. Legend has it that there was an ancient divine beast called the Primordial Dragon, which means this so-called dragon is from a long time ago."

"?"

"Since it's from a long time ago, it poses a problem because, as far as I know, people's writing habits in the past were not from left to right."

Upon hearing this, Hiyori pondered briefly.

"Well, indeed, some ancient books of The Tsuchimikado Family were written from the right side."

"Then it's correct, which means we should count the squares from right to left..."

"Ah, then it's this one."

Saying so, Hiyori quickly acted once again.

Why was this action so fast? Despite his headache, Ryuto desperately tried to stop her.

"Wait, it's still not that one."

"Ah, really?"

Hiyori showed a surprised expression.

"I haven't finished yet, let me explain further."

"But the code should be over already, Lord Ryuto."

"That's true, but there is another clue that is not in the code, it's a hidden clue."

"A hidden clue?"

"Yes, Hiyori, you should still remember, the dragon pattern on the subway route map."

"... Is there a problem with that?"

... This is tiring.

"I mentioned it before, that pattern is upside down."

"Upside down, now that you mention it."

"From our perspective, that pattern is upside down. Similarly, it should also be upside down here, at least from our perspective."

"Upside down? So..."

"Yes, it should be the third row counted from bottom to top, and the fifth square counted from right to left."

Hearing this, Hiyori came to a conclusion.

"So, it's the third row counted from bottom to top, and the fifth square counted from right to left."

"Well, that should be correct."

Phew... it's really exhausting. Ryuto couldn't help but heave a sigh of relief.

Meanwhile, Hiyori quickly opened the cabinet.

With a bang, the cabinet opened.

"Lord Ryuto, you guessed it right."

Hiyori smiled and turned around.

Well, it seems like there's no problem. By the way, this really consumes energy.

So the two of them opened the cabinet door.

Inside, there was only one bag, and inside the bag were some strange clothes and a piece of paper.

The paper was typed.

On it was...

Seeing this paper means that you have successfully avoided those traps and decoded the code. I must commend your performance. Since you have solved this code, there is no need to waste time on it anymore. Therefore, based on the above reasons, let's quickly move on to the next step. The back of the paper contains the relevant address. After changing into the clothes in the bag, please proceed immediately to that location, as one of the bombs is there. Oh, by the way, besides the bomb in the subway, there are two bombs in this game that you need to solve. One location has already been mentioned, and the location of the other bomb is written on the previous bomb. In other words, you cannot know the location of the second bomb without solving the first one. Finally, I hope you enjoy the game.After rambling on and on, it basically means that this game is far from over, right?

Complaining, I flipped the paper over, which recorded the longitude and latitude of a certain location.

"Master Ryuto, let's go quickly."

Before I could even comprehend, Hiyori energetically urged from the side.

Hmm... This guy is really spirited. Despite Ryuto's complaints, he continued with this annoying game.