"Yuuto, cover Eito who's fighting Zangetsu! Koneko, attack the stray devil in the back, Akeno, fight that Rider called Lazer."

"Alright! Hah!"

Kiba used the power of his knight's piece to quickly close the gap with Zangetsu Shin and swung his sword.

"Weak!"

Zangetsu Shin blocked the attack with the Sonic Arrow.

"Those attack is useless against me!"

"UAAAAAAGH!"

He went on to knock him away with his bow.

"Ow! What the heck is Kiba doing!?"

The moment Kiba collided with Ex-Aid at the end of the blast, he crashed to the ground.

Lock On!

"It's over!"

Melon Energy!

""AAAAAAAAAAHHH!""

He hit both of them with the Sonic Volley.

"Hmph, weaklings… you are no match for the Genesis Driver that we developed."

"Guh! Too strong… he's too strong…"

"Damn it! How can I, OC Lord… lose to this guy…"

Kiba and Ex-Aid muttered weakly due to the injury.

Meanwhile

"Hyah!"

"Fuck! You son of a bitch!"

While Zangetsu Shin was fighting against Ex-Aid and Kiba, Duke was fighting against OOO… but it wasn't a fight, it was more of a one-sided attack by Duke. The reason for this?

"Oh my, weak, way too weak, how could you challenge me with such lack of strength?"

As Duke put it, OOO was too weak.

"Shit! Don't insult me! I'll show you OOO's power!"

He took the Batta Medal out of the driver and set a yellow medal in its place before scanned it.

Taka, Tora, Cheetah!

Then OOO's legs, which had been green, turned yellow.

"Ooh… you changed color."

"Heh! This is the power of the Cheetah Medal!"

With that, OOO set up his Medajalibur and charged towards Duke.

"What!? He's too fast… Gah!"

The speed was so fast that Duke couldn't handle it and was hit by the attack.

"Heh! How about that!? This is my true power!"

Duke was finally struck, and OOO, gleeful, continued to attack.

"What the hell is this… he's too quick…"

"Hah! Duke is not a big deal!" OOO thought he had won, and shouted as he tried to slash Duke in the back. However…

"Certainly fast… but… that's it!"

Duke dodged OOO's attack and then some.

"What!? An attack—AAAAAAAAAAAHH!"

He began to attack OOO with arrows.

"Wha—it's just a slip up!" He then tried to use his cheetah power to attack Duke again.

However…

"It's no use, your attacks are useless now!"

All of OOO's attacks were either dodged or stopped by the Sonic Arrow.

"W-why!? No way you can keep up with my speed…"

"Fufufu, you dumb devil, the secret is not following… but predicting your attacks."

"What did you say!?"

OOO was confused at the word 'predicting', while Duke rushed at him and kicked him in the head, causing him to fall and stomped on his back as he talked.

"This attack of yours is indeed impressive, because I couldn't keep up with your speed, but you are too stupid and unproductive to use this power, it's easy to calculate your speed and attack pattern, and predict where you will attack next!"

"Huh!? No way… UAGH!"

Duke struck OOO again and again with his bow, and when he was weakened, he grabbed him by the neck and forced him to stand up, then kicked him and threw him away.

"I'm sure I've told you before, but with scum like you, any power you have is trash… and yet, somehow, you surpass humanity without using my invention."

Lock On!

"This is unacceptable!"

Lemon Energy!

"AAAAAAAAGH!"

Duke's energy-laden slash struck OOO, forcing him to untransform.

"N-no… way…"

"In the end, it's not savages like you who will win in the end, but civilized people like me." Duke said to OOO as he poked him in the head with his index finger.

"Ehe, that's quite something, Professor…"

"Ara, ara, you better not looking away." Akeno said to Lazer, who was impressed with Duke's fighting skills, and fired a thunderstrike at him.

"Heh, that's too easy! You can't follow me with an attack like that!"

With that, Lazer dodged all incoming thunderstrikes.

"Here we go!"

He detached his shoulder wheel and threw it at Akeno as if he was throwing a frisbee. The wheel then took a boomerang-like trajectory as it homed toward Akeno.

"UOOOOOOOOOGH! I won't let it, Akeno-san!" Toma shouted, who had transformed into Garagaranda, as he protected Akeno with his body.

"Toma-kun…"

"You're willing to throw yourself in and protect someone…? You make me turned on, Toma-kun…"

"To be honest, I don't feel like fighting this battle, but! But if it's to protect Akeno-san and Issei! Please! Combatmen!"

"""EEEEEE!"""

Garagaranda summoned 30 Combatmen.

"Oh, yeah, come on."

"UOOOOHH!"

"""EEEE!"""

The Combatmen and Garagaranda shouted and began to attack Lazer. The Combatmen tried to attack with their daggers, but one by one they were destroyed. However, as Lazer was eliminating the Combatmen, Garagaranda took advantage of the opportunity to attack Lazer with his right arm, which was being used as a whip.

"Oho, not bad… but you're still inexperienced."

However, Lazer grabbed the arm and threw it away.

"A bit stronger than OOO and Ex-Aid, but it's still way too green."

Gashat! Kimewaza! SHAKARIKI CRITICAL STRIKE!

"Ora!"

"GAAAAAAAAGH!"

"""EEEEEEEEEEEE!"""

Lazer threw the wheel, which was covered by a large amount of energy towards Garagaranda. The wheel then drew an irregular trajectory and swept the Shocker Combatmen around it, finally hitting Garagaranda, who was blown away by the impact of the attack.

"Toma-kun!"

"Akeno-san… sorry, he's just too strong…!"

"No… you're quite good too, but I guess that's the difference in experience." Lazer said to Garagaranda, who was light-headed but decently strong.

"Examiner seem to be doing okay… and we're almost finished…"

Brave, who is in charge of operating the stray devil, thought as he looked at the Evil Piece and Viser, which were almost ready to be separated.

But then…

"Fly…"

"What the!? Get out of my way!"

Koneko suddenly intervened and tried to punch Brave out of the way. However…

"Huh…?"

She didn't know why, but Koneko felt as if she knew Brave somewhere and hesitated to attack. Meanwhile, Brave grabbed Koneko's arm.

"If you're not going to attack me, get out of my way. I have things to do, and I don't have time for you."

"Things to do… what do you mean?"

"I've already told you, operation on the stray devil… in simple terms, is to take out the Evil Piece inside her."

"Huh…? But the Evil Piece… you can't just…"

"I can, just watch me! HAH!"

"GYAAAAAAAA!"

Brave slashed at Viser with the Gashacon Sword as hard as he could.

"Eeh…"

"What the…"

"What do you mean… the Evil Piece inside Viser is…"

The members of the Occult Research Club couldn't believe their eyes at the sight before them. The Evil Piece, which they thought could never be separated once it was inside the body, was ejected from Viser's body.

"As you can see, we've separated the Evil Piece from the stray devil's host."

"That's impossible! Evil Piece… it can't be!"

Rias couldn't believe it, and she was stunned. Viser's form returned to its original human form, and instead the Evil Piece mutated into a monster like Viser before it.

"Well then, due to various reasons, there has been a significant delay in the scheduled completion time of the surgery. Skill Level 2."

Gachan! Level Up! Taddle Quest~!

Brave transformed into Brave Level 2 to finish the job at once.

"Shit! I can't let it end like this!" The fallen Ex-Aid took the Gashacon Breaker and tried to attack Brave from behind.

"Stop!" Koneko suddenly punched Ex-Aid in the face.

"AGH!"

"Eito! Koneko!? Have you lost your mind!?" Rias demanded.

"Buchou, let's leave this to them."

"But…"

"…I'm sorry, but there's nothing we can do now…"

"…Indeed…"

"I agree with you."

Rias pondered for a moment as everyone said their mind.

"…Alright, it's no use, everyone, stop fighting." She reluctantly told her peerage.

"Buchou! But these bastards came into your territory without permission! Leaving them alone—"

"Ryoichi, let's not do this anymore, it's pointless to fight anymore."

"But…GAAAAAAAAAAHH!"

At that moment, Akeno fired a thunderbolt at Ryoichi, knocking him out.

"Apparently, they're going to stop fighting for a while…"

"Yeah, I don't know how the wind is blowing, but…"

"Then let's revving it up and kill the monster from here."

Zangetsu Shin, Duke, and Lazer turned around.

"Prodigy! Let's take it out in one fell swoop!"

Gashat! Kimewaza! BAKUSOU CRITICAL STRIKE!

"Of course!"

Gashat! Kimewaza! TADDLE CRITICAL STRIKE!

"We're attacking as well!"

Melon Energy Squash!

"Alright!"

Lemon Energy Squash!

"""HAAAAAAAAAAAAHH!"""

"UGYAAAAAAAAAAA!"

The four of them jumped up high and performed four Rider Kicks that exploded on the monster, who was blown away with an explosion.

"Surgery complete…"

Brave then carried Viser, who had reverted to human form, and turned to leave the scene.

"Wait! Who are you people!? Why the Evil Piece…"

"Hmph, I don't have the obligation to tell you, who don't understand the value of life."

"But… to be able to separate the Evil Piece… your power would destroy the order of this world…"

"Order…? You are the ones who are destroying order. You seem to be mistaken, but this land does not belong to you devils! It belongs to humanity! And we will continue to fight in this land to protect people!"

"I won't let—"

Rias was about to say that she would not allow it, when Brave continued.

"I'll tell you one thing, human life… don't ever take them so lightly!"

"What he said, well then…"

After Brave said that to Rias, Duke fired a number of energy arrows to the surroundings, and blending in the explosions, the Riders left the scene.

"They're gone…"

"Just who are they…?"

"Yeah, seriously, who are they?"

Akeno, Kiba, and Toma muttered.

"I don't know… but if we let someone with the ability to separate the Evil Pieces go, the balance will collapse, I'll ask my brother to investigate…" Rias said to everyone, while Koneko was thinking of someone else.

'That knight-like Rider… he feels familiar…'

Koneko didn't realize yet that Brave's identity was Hiiro, her lifesaver, but she had a feeling that she had met him somewhere before.

A few hours later

Seito University Hospital, CR Headquarters

After the operation was over and the two retrieved former devils were handed over to the Ministry of Health staff, everyone gathered at the CR headquarters.

"So, you and brother fought the devil that ruled Kuoh?"

"Something tells me you've been through a lot over there."

Mitsuzane and Nico told Takatora.

"Yeah, but Rias Gremory… she's no good. I thought she's got the right stuff, but she's not experienced enough, no one wants someone like that as a ruler…"

"What a mess… what the hell are those devils thinking, they should at least place an assistant… and her peerage's level is not much either, do they even have an awareness of being Kuoh's ruler…?"

Ryoma and Takatora said.

"But I'm glad everyone is safe."

"I'm so worried about you, especially Hiiro, because all I can do is wait, which is pathetic…"

"Hn, you two worry too much, especially you, Father, you'll get a hole in your stomach, if it keeps up." Hiiro snarked at Poppy and Haima, who were happy to be back safely.

"Heh, you've got good parent, Hiiro-sensei."

"I agree."

Takatora and Masamune muttered at that.

"Now that we're all here, let's have a debriefing and review while eating the cake from Charmant we bought before the mission."

"Ooh… good idea!"

"Nice, director!"

Poppy and Kiriya responded to Masamune's suggestion and took out three whole cakes from the refrigerator and placed them on the table.

"Hm, cake…? I'm not a damn brat."

"Oh, Sid, I don't think it's that bad."

"Yes, it's important to replenish sugar intake after a long day."

Minato and Ryoma said to Sid, who was swearing at the whole cake on the table.

"I've got to go!"

"Me too!"

Poppy and Kiriya took out their knives and started to cut the cake.

"Wait!" Hiiro shouted, standing up. Then, standing in front of the cake, he said…

"There is nothing I can't cut… scalpel."

"Eh, uh… right, here."

Poppy handed Hiro a knife, who cut it evenly one after another with his excellent knife work.

"…How do I react about this?"

"…Well…"

Nico and Mitsuzane muttered as they watched.