Demon Lord's Reincarnation

The moment Kretos decided that he would win the tournament, he looked for Afeus to ask him to help him gather information. Afeus was at first reluctant to stop his research but when Kretos told him that he was willing to share his insights regarding magic, Afeus changed his tune real fast. 

The two of them proceeded to go around the school asking the students that were at the previous tournament about the opponents they faced. 

...

While Kretos was going around gathering information, at the Grand Mage's mage tower, three demons have gathered. One of these demons present was the maid that killed Lisa and Matias. Another who had just arrived looked like the deceased Grand Mage, but once he entered the room his face turned into that of a young man.

The last one was sitting beside the maid was the arrogant demon called Amon that killed both the Grand Mage and the Warrior King. He was looking at the other two with anger in his eyes. He stood up and pounded on the table in front of him. His bloodlust and mana intertwining with his rage. 

"What the hell?! Why did you guys make me retreat?! The battle was just getting good with those girls. Especially the one who was using the scythe, that chick ain't human, that was a monster in human skin. She was amazing, just thinking about her makes my blood boil with excitement." 

When Amon started talking he was angry as his bloodlust covered the entire room, but midway through his speech, he became intoxicated with excitement instead. The feeling he had at that time was the greatest feeling he had ever felt in a battle. He then recalled the fight he had with the four powerful maidens. Each one of them was strong, one of them was even stronger than the Grand Mage and the Warrior King. Just reliving that battle in his mind, made Amon's body shiver in exhilaration. 

The maid noticed that something was happening to Amon's lower region and frowned in disgust. "Calm down, you pervert." 

Hearing what the maid said made Amon stop his daydreaming and glare at the maid in anger. The two then looked at each other as if they wanted to rip the other person's throat. Their mana fluctuated violently, that if a normal person was in the room he would've suffocated by the sheer intensity of the mana. Amon was about to say something, but then the silent young demon that took the face of the Grand Mage spoke. 

"Enough of this farce, I didn't call you two here to bicker. If you two continue, do you wish for me to join in as well?" Feeling the bloodlust emanating from the young demon, the maid and Amon stopped quarreling. The maid couldn't stop trembling as she lowered her head unable to look the young demon in the eye. Even the battle loving Amon didn't like messing with this young demon, cause in his own words the fight wouldn't excite him. 

"We didn't come out of our exiled kingdom to play around. We came here to conquer and take back what is rightfully ours. Amon, I called you back because as I watched your battle, I could deduce that if it continued you would've lost and died. At this stage, we cannot afford to lose demons like you." 

The moment the young demon said those words, Amon's aura shot up and his bloodlust once again enveloped the room. The maid sitting beside him snickered. 

"Nero! Even if it's you that's not something you should say to me! I would lose to those girls? I wasn't even using my full power, so how can you know that?!" 

The young demon named Nero looked at Amon with eyes of indifference as he answered. "Even if you used your full power I doubt you would win. You were indeed holding back, but you weren't the only one holding back. The woman with the scythe was also holding back, so was the woman that used fist and arrows. If those two got serious then your death would've been assured." 

When Amon heard that he no longer got angry, instead he started laughing heartily. "HAHAHA! So they were holding back, they had so much more to show me! This is awesome, only fighting against powerful opponents could I grow stronger. Only fighting powerful opponents such as them can I show everyone my strength!" 

"Enough! Amon, we came here to conquer not to satisfy your petty wishes. We will conquer the Reschbeauch Kingdom in another way seeing as force isn't going to work." The young demon calmly declared, and Amon was just about to respond but he stopped himself when he saw the look Nero was giving him. 

"I understand what you want to do Amon, but don't forget those women aren't the strongest fighting force Reschbeauch has. There is still that person called Ren. Though he hasn't shown himself, based on what Harold said before, he is the hidden leader within the Reschbeauch Kingdom." 

"So what do you propose we do?" The maid asked after finally calming down a bit. 

"I already made plans for that, so no need to worry. Instead, let's talk about the upcoming tournament." 

When Amon heard the word tournament, his eyes shone with a murderous glint as he smiled. "You're going to let me participate, right Nero?" 

Nero looked Amon, who looked like a dog wagging his tail. Seeing this made Nero sigh, 'this person is one of the best fighters among demons? How low have we fallen...' 

"Yes, Amon you may join the tournament. As long as you refrain from using your demon form, you can join, that was the deal. If you show your demon form during the tournament, you know the consequence right?" Nero's cold stare bore through Amon. 

The battle junkie of a demon could only gulp dryly as he lowered his head. "...Yes..." 

"Very well, the tournament will be a gathering of not only human prodigies but even other races would join in as well. This is the perfect chance for us to plant some of our own into the ranks of the other races."