What Zion saw inside the cave shocked him.

From a normal person's standpoint, this is horrendous but from Zion, it's quite normal. He slowly lost his emotions from what he saw in caves and buildings owned by demon priests or demon worshippers.

However, thanks to his siblings, he and Zack regained their humanity and sanity.

Back to school.

In an outdoor training field.

While standing on a podium, Professor Arts raised his voice so that the students could see him. Zion is absent, so someone else showcases their skills.

Xiao was the target of many from all grade levels who hoped to impress her.

From sword arts to magic and even martial arts.

It was clear that Xiao wasn't impressed and simply talked to Kira and Shyla.

After a little while, Kira came up to show her powers.

Kira spreads her wings because of her Lark class. Class objectives include increasing speed and strengthening the wings, including pouring Mana or Qi into the wings to make them stronger and able to take hits.

In her elemental body class, Kira can turn anything she touches into something she can turn into, for instance, if she touches a certain element, her skin copies its toughness, but the damage she can take is limited.

Kira rummaged through her pocket and pulled out a small metallic rock.

She turned the same color as the rock she was holding.

The 3 students almost immediately pushed Kira away as Xiao was clearly impressed by her.

Three of them tried to impress her but got scolded by the instructor.

The professor of the class punished the student who pushed Kira off for using their powers in an attempt to harm another student.

It outraged the girls that the male student tried to impress Xiao by pushing Kira and wanted a harsher punishment.

Xiao thought about having them clean all the toilets in the entire school but only the boys' bathroom.

The boys glared at Kira but the teacher stopped what the boys said or gestured.

As the instructor said to the students, "Just because you want to gain a favor for your clan, guild, etc... Doing that, pushing and hurting other people just for a favor doesn't work on her.

Xiao healed her minor wounds.

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The instructor said, "I don't understand why you are so actively impressing Xiao when Zion is away. When many of the upperclassmen are way behind Zack and Zion, and they used to be cocky once upon a time either that or not even trying, keeps on making excuses and so on."

While the students looked at the upperclassmen snickering at them, the instructor looked directly at them while scolding them in front of the class.

After that, the instructor called some of the students from the student council to send them to the changing room since the upperclassmen who got shamed liked to bully younger students to vent their anger.

The student council members arrived before the lower classmen. The arrogant upperclassmen were mad, so they decided to stay in the bathroom and start punching the walls. However, the walls are protected by magic and qi mixture.

When the student council president Zack peeked into the bathroom, he said to them, "If you want to destroy the wall, do it, nobody will stop you (quietly laughing and taunting them even more).". Following Zack's departure, the upperclassmen bowed in respect since he was stronger than the headmaster or that's what everyone said.

Three upper-class bullies were filled with envy, rage, and jealousy.

After he was on a demon raid a few hours ago, a demon scale landed on Zack's clothes. However, it could not control him because the scale is powered by strong negative emotions that the three bullies already express.

The demon scale controlled the three bullies. The demon was by no means weak it was S class. An S-class demon is capable of destroying an S-rank group that is well-armed and trained with only half the power.

The S rank group consists of five people who can kill hundreds of A rank demons in a few minutes or an S rank demon captain.

The Academy has a magic circle surrounding the entire city. By using a controlled portal, this magic circle teleports the enemy outside the city to a barren land.

An announcement was made to the whole academy but Zack stopped it because he wanted to end the demon himself.

As Zack heard the 3 guys venting out in the bathroom and saw them in the outdoor training field being shamed for what they did, trying to impress little miss cutie, he remembered where the strong emotions were.

The demon's whispers grew louder and louder, slowly corrupting their minds.

They will repeat words that target you, such as worthless and so on, to bring out the strongest emotion to make the perfect minion to serve them.

Zack rushed to the portal to kill the demons.

They were commanded by whispers like a queen in a hive.

They immediately got ready for combat but were not expecting Zack to come out of the portal.

The demons got stronger again bringing out their full power.

The 3 bullies accepted being a demon that let the whispering demon make them chaos demons.

A level higher is called Saint rank.

A small county can be destroyed by them. In terms of size, a county could be equivalent to a tier 2 castle. The system consists of five tiers. A tier 1 castle can hold off a B to A rank horde, a tier 2 can hold off an S-rank horde, a tier 3 can hold off a Saint rank horde, a tier 4 can hold off a transcendent rank horde, and a tier 5 can hold off a God rank horde.

This means they can destroy a castle full of adventurers with their full power with villages and take the land as their territory.

It is possible for hordes of demon minions to destroy much of their path. As the horde grows, the enemies become more powerful and the leader becomes more powerful. For example, the God rank horde is led by a demon general, who is the right-hand man of the strongest living creature, the demon lord.

The demon lord's name before he was defeated was Grodes, and there are only seven generals.

In the demon language arts of forbidden knowledge, the demon began chanting.

Zack knows the enchantment and cancels it by chanting it backward using the spell on the caster instead.

The black magic spell was called Apoy a flame that existed way before life on the planet was even born.

The other name was everlasting flame it's the middle of the planet still burning for billions of years.

Zack can control the atoms only people who use powers similar to him can combat it but it was rare if not impossible in fact.