The magic cards I made are absolutely flawless!

Challenger: "...At first we didn't think it was particularly difficult, but when we found out its mechanism, it was really disgusting."

"Oh? Tell me about its mechanism, maybe I can figure it out."

Dekan seemed even more interested, his eyes becoming somewhat fervent.

This is likely a premium room.

Since the difficulty is high, the exploration level will also be higher, and there might even be information about the BOSS room.

"Let's skip that classroom. I really see no hope of passing this level... I can't let you all suffer..."

"Tell me about the mechanics first, and I'll judge the difficulty myself."

Dekan spoke with unwavering confidence, exuding an aura of absolute authority.

Cornelia beside him remained calm and composed, her expression icy and silent, seemingly unmoved by any formidable enemy.

The challenger was taken aback by the sight of the two people, and his heart began to race involuntarily.

For a moment, he even had the illusion that these two were the true rulers of this demonic school.

This is the aura of an absolute powerhouse!

Perhaps... they really can avenge themselves and their companions!

The challenger took a deep breath, gently patted his chest, and looked at Dekan and Cornelia with a solemn expression, saying, "That's a music classroom, the mechanism is called the Demon Choir."

"Music teachers play instruments, and students participate in the Devil Choir's performance."

"When you first enter the classroom, you can listen to the choir sing up to three times, and you will have 15 minutes of free time to practice on your own."

"Next, we'll join their chorus. If they sing the wrong song three times, it will trigger the teacher's killing mechanism."

"Attack other students, and you will be attacked and killed by the evil teacher."

This made Dekan frown slightly.

He felt that this mechanism wasn't hellish; in fact, it was quite ordinary.

It's unlikely that a fourth-tier challenger would be defeated.

Unless they are both tone-deaf.

Are there other traps in this game besides the obvious rules?

"Dekan asked."

"...Yes! Actually, the demon teachers aren't particularly disgusting, but those damned demon students in the demon choir ostracize new students. They seem to have a secret code; if a new student joins the choir, they'll collectively and deliberately change the way they sing certain parts."

The challenger answered through gritted teeth.

"Then the teacher will judge that you sang it wrong?"

"Yes, 'right and wrong are relative, not absolute,' and we only discovered this rule trap after we were tricked. Even after using up all three chances, we still couldn't deduce the variations on the secret codes between the demon students..."

The challenger's face was filled with pain and regret, and his eyes turned red.

hiss.

Dekan stroked his chin, deep in thought.

If that's the mechanism, he does acknowledge that the classroom is somewhat eerie.

In the previous rooms, we were all about outsmarting the teachers, but now even the students in the music classroom are starting to cause trouble?

I thought those devilish students were all incredibly kind and innocent.

I never imagined there could be someone with such a terrible character!

Our school absolutely forbids any behavior that involves bullying classmates!

Dekan is going to stop this from happening.

"Cornelia, let's go!"

"it is good."

"Wait, aren't you going to let me tell you what we already know?"

The challenger looked at the two who were about to leave the infirmary without hesitation and asked somewhat flusteredly.

"No need. The gentlemen watching the live stream outside don't want to hear such complicated mechanism analysis. Just watch me rectify the Demon Choir, and that's it."

"...Did you bring spectator software?"

"New anchor".

With those words, Dekan and Cornelia strode out of the infirmary, leaving the challenger utterly bewildered...

"I haven't told them where the music room is yet..."

"Did they even get their hands on the school map?!"

"How come I've never heard of such a master..."

The challenger sat in the infirmary, lost in thought and muttering to himself.

......

Dekan and Cornelia headed towards the music room.

The corridors of the Demon Academy have now been completely transformed into Dekan and Cornelia's backyard.

However, they were annoyed by a bunch of idle devil students wandering around on the road, so they had to resume classes at school.

Anyway, I'll have to switch to a classroom mode when I challenge the music classroom later.

"Cornelia, this classroom is more suitable for solo challenges. Wait for me at the door later."

"it is good."

As they approached the music room, Dekan took a demon pass out of his pocket and handed it to Cornelia.

This was what they had previously looted from the corpse of the devilish teacher in the classroom that had been ransacked by Batchell.

The broadcasting room and the infirmary did not have demon passes, but the teachers in the other two classrooms did.

Originally, the two of them each took one.

Now both cards are in Cornelia's hands, and each card can guarantee safety for at least half an hour.

A music lesson lasts only an hour, so even if the headmaster is standing right next to Cornelia, she won't be in any danger while waiting outside the door.

Cornelia, I'm going in.

"Well, be careful."

Then Dekan pushed open the door to the music classroom alone and went inside.

Light instantly filled his field of vision.

This music classroom looks like a classical performance hall.

Unlike the dimly lit corridor, the music classroom was brightly lit, with stone pillars carved with all sorts of lifelike paintings, and the walls seemed to be made of pure, flawless white jade.

At the front of the hall was a circular stage covered with a thick, soft carpet. Various musical instruments were placed on both sides, and in the center were two rows of steps on which twenty demon students stood.

Looks like it's the Devil Choir.

In this classroom, the most conspicuous figure was the male demon standing in front of the demon choir, dressed in a black tuxedo, wearing gold-rimmed glasses, looking refined yet somewhat serious.

Welcome to the music classroom.

Seemingly noticing Dekan's arrival, the music teacher turned around and said with a calm smile.

030 Dekan's first performance

Before the devil teacher could finish his opening remarks, Dekan had already walked over to the seats opposite the stage and sat down.

"Let's start singing."

He looked just like a judge, resting his chin on his hand and leaning back in his chair.

His behavior made the students of the Devil Choir frown.

Because what Dekan is most arrogant about is—

He turned the chair upside down, his back to the choir.

The music teacher paused for a moment, then said, "...Let's begin."

Since this student is so arrogant, we won't even give him a chance to start.

So it's okay not to introduce the rules.

After all, it was done voluntarily by the students.

When the killing mechanism is triggered, just follow the rules.

The music teacher sneered, turned to look at the choir students, and began to play the large instrument in front of him.

The instrument looks like a piano and sounds like a piano, so Dekan treated it as such.

Well, except that the tone is a little bit strange.

However, in Dekan's view, tone has never been the most important factor for a piano.

Decan is concerned with its structure—

It would be perfect to convert it into a barbecue grill and place it by the pool.

......

To the accompaniment of music, the Devil Choir began their synchronized performance.

The choir's repertoire is quite boisterous and captivating.

Like the murmur of a fallen person, or the sigh of a judge, it carries an indescribable charm, as if trying to draw the listener in and make them lose themselves in it.

In less than five minutes, they finished their first performance.

Dekan didn't react at all until they finished singing.

He had no intention of applauding at all.

All that could be heard was his somewhat dissatisfied voice: "I'm sorry, I can't use this chair to turn around for you."