After a major victory against the Witch Demon, Kai returns to his daily routine at the Brethening Academy. However, this calm did not last long. Rumiras Strom, an arrogant new student, starts causing problems in class 2-W.
That day, Professor Aria announced that their class would participate in joint training with other classes to face a new threat from an increasingly powerful demon army. Rumiras, with her haughty attitude, scorns the rankings of other classes, especially students who are not nobles.
"How can you commoners hope to match us nobles?" Rumiras sneered with a dismissive smile.
Kai, who had learned to control his emotions, looked at Rumiras calmly. "Strength is not determined by birth status, but by determination and training. We are all here to protect this world."
Rumiras smiled sarcastically. "We'll see who is stronger."
The combined training begins with simulated battles against various types of demons. Kai, along with Yuu, Rin, Mizuki, and Gura, demonstrate extraordinary teamwork, while Rumiras and the three noble children under him—Zhura Fossil, Nika Crew, and Vista Runa—attempt to dominate with their individual strength.
In the middle of training, Forger Consil appears with surprising news. "We received information that the demon army is now led by Vervatista, one of the strongest subordinates of the Demon King Handala. They have gathered more than 10,000 souls to summon a new evolutionary monster, Kijin."
Kai felt tense hearing this news. "What should we do?"
Forger explained, "We must unite our forces and attack the Vervatista base before they succeed in summoning Kijin. This is a dangerous mission, but we have no other choice."
The exercises soon turned into preparations for real war. Kai and his friends, along with the elite unit of 6 Moon Witches, plan a surprise attack on the Vervatista base. Rumiras, although haughty, decided to join because of her ambition to prove her strength.
At the Vervatista headquarters, the atmosphere is tense and filled with dark energy. Demon troops patrolled every corner, making every step feel like a trap.
"We have to be careful," whispered Jun, observing the enemy's movements. "If we're detected, they could call Kijin before we're ready."
Kai nodded. "We have to work together. It's not about who is stronger, but about how we can stop Vervatista."
As they approached the center of the base, they encountered a demon army that was stronger than before. Among them, a sorcerer demon known as the Witch Demon appeared, using spirit techniques to create illusions and fire attacks.
Kai and the elite unit immediately fight, using a combination of magic and strategy to counter the illusions and fire attacks. Kai, having mastered most of Kuraeza's power, launches a counterattack with even more powerful fire.
However, when they managed to get close to Vervatista, the demon showed its true power. "You are fools for thinking you can stop us," said Vervatista in a booming voice. "I will show you the devil's true power!"
Vervatista summons the fire spirit Ifrit, creating a circle of fire that is more powerful than the previous Inferno. Kai and his friends were caught in the onslaught of fiery flames, feeling the heat almost unbearable.
"We have to destroy the focus!" Forger shouted, leading a direct charge at Vervatista.
Kai, with determination, mustered all his strength. He felt a boundless flow of energy from Kuraeza, concentrating more powerful flames to fight Ifrit.
"For everyone I love, and for the future of this world!" Kai shouted, launching his final attack with all his strength.
The battle reached its peak, with fiery attacks from both sides. The world seemed to stop for a moment, waiting for the outcome of this decisive battle.