Three years after D Genesis Dungeon

"I'm sorry ... what should I report this?"

Naruse was in trouble.

The monitoring section of the dungeon management section of the JDA (Japan Dungeon Association) mainly deals with dungeon generation and capture status in Japan. New dungeons are said to be born about once per year in each area, if not so often. However, few countries, like Japan, have high-precision seismometers on a nationwide scale, so it was speculated that there are many dungeons that have not yet been found.

There was a reaction like that before-

"You just have to report as it happened."

He looked up, and there was his boss, Miharu. , 29 years old. He is the chief of the monitoring section. He was a nervous man whose forehead was about to recede.

"It's even more so if you get lost. Would it be confusing if you put in your own speculation?"

Sure, that's right, but the result-Miharu was hesitant about the content that would be skeptical if reported directly.

"Why don't you waste it? What's going on?" "No, um ... then I'll report it as measured!"

Do you already know? I'll push the rest to my boss. Miharu decides to start chatting like water on the upright.

"At 14:32, we caught a shaking that seemed to have caused a dungeon near the New National Stadium." "Is it right next to Yoyogi ?!"

The Yoyogi Dungeon was created three years ago during the NHK Broadcasting Center and the second physical education at the Yoyogi Stadium.

"Is it about 1km in a straight line?" "So close? What's the scale?" "Ah, um ... it's deep." "What is it?" ! "

The dungeon depth of Yoyogi Dungeon is 280m. 5 times roughly. It is undoubtedly one of the best depths in the world.

"Well then, the Oedo Line is going to be a big deal ... immediately contact the relevant parties!"

Dungeons in urban areas destroy underground infrastructure. Three years ago, when the Yoyogi Dungeon was born, the section between Yoyogi Park and Harajuku on the Chiyoda Line was cut off, causing a major accident. It's early in the afternoon of a weekday, and if the subway tracks suddenly disappear at such a time, that would be a catastrophe. However--

"Ah, no, it's probably near Aoyama Gate, so it's probably safe."

Research has shown that the space actually occupied by the dungeon is cylindrical with a diameter of several meters to at most ten and several meters. It is known that the dungeon quake is the impact when the needle is driven, and the annihilation quake is the impact when the needle comes off. From Aoyama Gate, there is less than 200m to the Oedo Line route. If the measurements are correct, there should be no damage anywhere.

"But we need a report. The entrance must be closed and the stadium under construction is inevitably affected. The Olympic Committee is also waiting." ? "

He was asked without hiding the frustration of this busy situation.

"It's that ... there's no more." "What?" "So dungeon."

The boss looked like a pigeon eating a bean gun. Miharu was ready for the next storm, wondering what her face would look like when she saw the data.

"The deep dungeon that appeared in Tokyo ..."

The boss glanced at his watch.

"Is it going to disappear in an hour? Is this something a joke?"

Miharu dropped her shoulders, looking at her boss with a light laugh with a willingness not to allow a joke.

"So I was confused about the report. Anyway, the deep dungeon that occurred near the Aoyama Gate at the New National Stadium at 14:32 has already disappeared as of 15:20. Recorded. Just minutes after the outbreak. "

After the last monster was defeated in Denver, everyone returned to the ground, and after a while the annihilation quake was recorded, after which it was reported that only traces of broken holes were left. Similar phenomena have been reported in the towed shallow dungeon.

"Would someone like to capture a deep dungeon in minutes after appearing?" "I don't know. I don't know, but the Tokyo people's peace and the schedule for the Olympics were followed. Is not it"

To her stunned boss, Miharu made up a mumbling dialogue and bowed that she couldn't speak any further. The boss heard the report and heard a serious face toward Miharu.

"So what do you want to report to the section manager?"