If it weren't for that sudden phone call, she would probably be enjoying a once-in-a-lifetime vacation right now.

Jiude Mai walked between the crowds with a little depression, and it was rare for her to have no particularly luxurious travel specifications and dress today: a pure black OL suit, full-rimmed glasses, a small handbag and red platform heels, that's all.

Not much different from an office girl, the OL outfit can disguise her identity, and the full-rimmed glasses are just to disguise her overly pressing queenly aura.

The little bag that looked like it was supposed to contain a full set of cosmetics actually contained a pocket pistol and a pair of ribs.

It's rare to pick up the style of a traditional ninja.

Unconcerned about some passers-by who were sucked in because of her proud figure that she couldn't hide, Mai Satoku expertly navigated the streets and alleys, exposing her figure only to the surveillance of those who would mislead the investigators. Following a complicated route that had been planned for a long time, she managed to shake off all the trailing people and reach her destination at the same time.

The so-called ninjas are a group of killers with loyalty; Being a killer undoubtedly requires mastery of disguise and escape.

"Tuk-tuk—"

I knocked on the door of the unknown house in front of me, but unsurprisingly no one answered.

After all, the bells in front of the door are aging to the point of being unusable, and the yard is overgrown with weeds, even growing out of the cracks of the stone bricks, covering the road, like an abandoned ancient building deep in the mountains.

Just as Mai was thinking about going straight up the second-floor window to enter, the door opened.

"Ah, long waiting."

A young man in a white coat with a haggard face slowly opened the door, his lifeless eyes sunk deep in the dark circles, like a teenager in an Internet café who had stayed up for three days and three nights and was on the verge of sudden death.

Even if he saw a beauty of the level of Mai Jiude, he didn't have the strength to pay more attention.

After a cursory glance to confirm the extent of the person in front of him, the young man turned around and returned to the house without hesitation.

"No one has walked through this gate since it was built, so everyone has forgotten about this entrance."

While listening to the strange explanation of the emaciated young man's weakness, Mai followed into the house.

A faint musty smell suddenly stirred up under the air outside, and the strange dampness reminded her of the feeling of having to go to the sewers of the city because of the demands of the mission.

Strangely enough, there is not even a single thing that can be called furniture in the house, and the gray concrete floor and primary color wooden structure are everywhere you look, and it looks like it has just been completed.

The haggard young man patted the wall somewhere, and when his palm pressed on it for a few seconds, the seemingly ordinary concrete wall was smoothly split in half, revealing a simple futuristic sci-fi style elevator compartment in iron gray inside.

"You're the guy introduced by the boss, take this elevator down, and the boss will be waiting for you in the hall."

After speaking, without waiting for Mai to ask, he walked straight to the wall on the other side, and after the same steps, he went through a series of rapid iris scans, bone scans, and blood collection and identification, and quickly disappeared into another elevator car that looked the same.

The skillful movements that can be completed with his eyes closed like clocking in and out of work are enough to show that the young man has gone through this process too many times.

“……”

Jiude Mai raised her eyebrows, of course she had all kinds of questions in her heart, but she who had experienced all kinds of winds and waves would not be surprised by this secrecy that could shock ordinary people, nor would she stop the emaciated young man to ask what the situation was.

It's just a little weird.

Stepping into the iron-gray elevator car, the next moment the passenger is detected, the door closes silently, and there are no buttons inside the mirror-like elevator, and even the number of floors is not displayed, and the whole elevator begins to run rapidly downward.

After all, it was a strange person who called her.

"Ding~"

It is no different from ordinary elevators, with a melodious arrival sound and a door that automatically slides open.

In the next moment, I was greeted by a wide silver-gray hall and a purple figure standing in the center of the hall.

"Welcome~ Welcome, Miss Mai Wine."

The familiar scarlet grin, and the pale cheeks after poor makeup.

The long hem of the garment swells high with exaggerated turns, ominous green hair rises proudly, and the dividing point depicts well-defined sideburns and face shapes, revealing an evil charm.

Hold your right chest with your left hand, take off your hat with your right hand, and bow forward slightly while nodding.

The etiquette that was originally full of grace always had a strange illusion under his movements.

"So, did you invite me to the masquerade?"

Jiude Mai is not inferior at all, but she actually knows very well in her heart that she is very jealous of this guy in the state of madness.

A simple madman is not terrible, but what is terrible is that a madman has great power.

"Actually, that's exactly what I think, but not right now."

In a gesture like that of an orchestra conductor, Mercer waved his finger and made a powerful start-up motion.

Beams of light cast from tiny holes in the ceiling, intertwined to form an accurate structural diagram that fills the entire hall.

At the top is a nondescript house, which is where Mai enters the place. However, in the overall structure plan, the ordinary house occupies less than one percent of the volume.

Underground, a dense cluster of buildings with hundreds of rooms, is the real body of this structural drawing.

As you can see, the scale of this complex is even the size of half of Shinjuku, and in order to completely cram the huge project into the underground space, it has even occupied and changed the underground drainage channels in Tokyo.

As for the purpose of the rooms in the building, the miniature images are clearly represented by various high-precision instruments and various specimens.

This is an institute, a place that is as large as any organizational institute in the world.

A chill welled up in Mai's heart.

"Actually, I don't like this tattered design, because it's not beautiful enough, it's not aesthetically pleasing, it's rude like a bat's questioning style...... However, extraordinary times can only be treated very often, and if you want to reap a better ending, appropriate patience is necessary-"

"That's a fart."

It's not Mai's interruption, it's the madman-like guy talking to himself.

Explain the truth in a matter-of-fact manner, and then retort and laugh maniacally like a joke.

Crazy laughter echoed in the empty hall, and the person concerned didn't mind the cold expression of Mai Jiude, but just laughed vigorously.

"Madness is like gravity, sometimes all you need to do is a gentle push~ bang! That's it. Oh, and of course, the same goes for our masquerade. ”

“…… You're here to say these non-marginal things? ”

Mai, who is difficult to deal with the weird, finally has to get straight to the point, if you continue to talk nonsense, maybe this madman's crazy words can be said to be ridiculous.

"Actually, I just wanted to invite you, beautiful lady, to this masquerade that is going to take place tonight. By the way, the 'no' option is not available at this time. ”

The emerald green eyes ripple with countless remembrances of chaos and evil.

"After all, this is the opening of a great event."