Dancing Circles on the Horizon of Events

"You found out?!" Onee-chan! "

"Ugh! Why..."

The waltzes, unaware of what was happening on the surface, were surprised by the sudden flies of arrows--

"And, for now, I'll plug it up, right?!"

--The tunnel exit is closed. I didn't expect the arrows to fly, so I figured out why they found out. For now, the two escape to the safe ground.

After blocking the exit of the tunnel with earth magic and building a sufficiently thick wall, Waltz and Lucia began discussing the cause.

"I wonder why they found out?" I've been walking in the ground all this time, so the people in the town won't know, but you were perfectly expecting an exit... "

"I see... I wonder why... (After all, it's most likely that you felt Lucia's magic power...)"

"I wonder if there's any other reason..." Waltz seemed convinced.

It seems that Waltz thought that there might be other possibilities, such as a barrier magical creature that could detect those who dive underground and approach the town... While thinking about how many people can dive and move underground, it seems that it has become less realistic, and seems to have been excluded from the list of possibilities.

However, even though Waltz was convinced of the cause, he could not speak to Lucia about it. I thought that if I told her badly, Lucia might get hurt.

"Huh, Lucia?"

Whether to say or not to say, Waltz is troubled... And I decided to leave it to the momentum —— but just before that, Lucia made a disturbing statement.

"Ah, I see. If you build a tunnel around the moat all at once, you won't be able to predict where it will come from!"

"... what?"

"What on earth did my sister think and come to such a conclusion..." When Waltz was confused and struggled to respond, Lucia apparently saw her sister's silence as positive--

Well then, let's dig a tunnel in this direction as well.

--In my mouth, I pierced the hole surrounding the moat with earth magic all at once.

It was an instant, and in less than three seconds, a tunnel long enough to be invisible on the other side was worn all at once to extend parallel to the moat.

Sometimes it was done in a very short time, and the magnitude of the magic power that was expended was not half that. Of course, the ground bison that were on the ground also had a big impact.

There was a screaming among the groundbysons, and they started to run all at once, looking for a place to escape. However, because Lucia's magic power was diffused as if it were rising from the whole ground, they had no place to escape.

As a result, the monsters didn't know where to run, and now they were in a confusion. Specifically, they began to engage in self-harming and fighting among their peers.

That was not the end of the phenomenon. Some ground bison are able to use magic, and as a result of the frenzy, an individual starts to emit magic towards them, excited by the appearance of a glaring soldier on the outer wall of the town.

The appearance was as usual a war. It was a composition called Monsters vs. Humans. It was an unlikely siege by monsters.

In the sight of that, the soldiers on the exterior walls think —— no.... I wonder if the fact that we attacked the hole in the borehole wall is the origin of the current situation. "And maybe we're already in a situation where regret doesn't come first..."