Demonic Freedom - DxD X Sister New Devil

As Kazuki made his way to the next location, he thought about what happened. It wasn't the worst result, but it wasn't the best either. Most of them didn't look that willing, especially the man, who probably has some special hatred for demons. However, he saw the hesitation in the black-haired fallen angel eyes, and thought of the two most likely possibilities:

Either she'll summon him alone, or she'll somehow manage to convince the others to join her. Either way, it'll take at least a few days for either possibility to happen, so he'll have to wait for now.

Soon, Kazuki has arrived at the next location.

"This is their address, right?" Kazuki said to himself, as he looked once again at the note Jin gave him

When he confirmed it was indeed their address, he smiled and approached the door, and knocked. He waited a little, and when he saw that there wasn't any reaction, he rang the bell and waited a little more. When he didn't receive a reaction again, he picked the lock with magic and opened the door, but when he entered the house, all of the lights were off

'Looks like there isn't anyone here…' he thought as he checked with magic to sense if there was someone in the house

'Well, that didn't go as I expected either… and I'm not going to search all over the town for her… I guess that I'll have to meet her when the others are here' Kazuki thought as he went out of the house, locking the door after him

'Let's hope that at least my last task will go smoothly… Time to go to Kuoh Academy!'

After some more walking, he arrived at Kuoh Academy

'What an interesting school. A lot of devils, among them Zechsy's and Sera's sisters, the Red Dragon Emperor, Baraqiel's daughter, a survivor of the Holy Sword Project, a Dhampir with the Forbidden Balor View, and even Kuroka's sister! There is also Jin's son, with the very unique combination of a demon, god, and a dragon, not to mention that he has Brynhildr, my sister that has zero control of father's power, Shuuya's daughter, a demon, an assassin, and very surprisingly, two disguised gods. This school is one of the biggest trouble magnet I've ever seen!' Kazuki said inwardly, and then smirked

'So much fun can be in this school, so much chaos!'

He then proceeded to walk through the gate, catching a lot of the students' attention as they were having their lunch break.

'He's so hot!!!!' thought the girls as he walked past through them

'Who the hell is this bastard??!!' thought the boys

Kazuki continued to walk towards the main building when he saw a petite girl with white hair and golden eyes staring at him. He smirked and approached her.

"Hey! Could you please tell me which floor is the second year's classes?" Kazuki asked with a smile and eyes closed

The girl stared at him a little, before answering:

"Second floor"

"Thank you! I'll see you around…" Kazuki said as he walked past her, giving her a little pat on her head, and then whispered in a voice only she could hear:

"Shirone-Chan~~~" he whispered and quickly made his way to the building. Hearing him saying her real name, Koneko gaped and quickly turned around, but he already entered the building and disappeared.

~~~ With Rias ~~~

Rias looked at the red-haired man walking into the school, talking to Koneko before he disappeared into the building.

'Did he come to meet Naruse-San?' she thought, as she recalled the last time he was here

~~~ Flashback – Half a Year Ago ~~~

It was just another day in the ORC, with Rias playing chess against Akeno, Kiba reading a book on the couch, and Koneko sitting next to him, eating chocolate sweets.

Then, they suddenly felt a massive demonic power from the entrance of the academy and quickly rushed towards it. On their way towards the source of the power, they met Sona, accompanied by her Queen, Tsubaki, her Knight, Meguri, and her Rook, Yura.

"You felt it too?" Rias asked her

"Yes, we need to be careful, whoever it is, he's very strong"

After a few seconds, they reached the entrance and saw a man standing there. He was a handsome young man, with rose-red colored hair, and pink-red colored eyes. He was dressed in a black suit, with its buttons open, revealing a red undershirt, with a necklace on his neck, which has a small silver dragon figurine on it, and wore a matched black pants.

"You sure took your time. I've been standing here for a minute before you arrived. It's very rude to make someone wait, you know?~~~" the man said with a teasing smirk

"What is a demon doing here?" asked Sona

"I'm here to tell you something since you're the self-proclaimed governors of this town..." the man said, maintaining his teasing smirk

"What do you mean by 'self-proclaimed governors'!?" Rias asked in anger

"Exactly what I said, Gremory. But that's not the point here…"

"Then what do you want?" asked Sona, narrowing her eyes

"No need to be so hostile..." the man said, raising his hands in surrender

"I'm here to tell you something important, so you won't be surprised and do something stupid"

"What is it?" Rias asked, still mad on the man

"In the next few days, the daughter of the demon lord is going to enroll in this academy. All I ask is that you won't do her any problems, and I can assure you she won't cause you any trouble"

"And why should we allow it?" asked Rias

"Perhaps you didn't hear me right. I'm telling you what's going to happen, I'm not asking for your permission"

"And why should we comply?" Rias asked. Sona looked between her friend and the stranger with worry. She felt the demonic power he released and knew that he can kill them all if he wanted, but Rias was getting carried away. Just when she was about to interrupt their conversation, the man burst in laughter.

"Hahahaha! Did someone ever tell you that you're hilarious? Sirzechs has been spoiling you way too much!"

"You know my brother?" asked Rias in surprise

"That doesn't matter right now, so let me tell you why you should 'comply'" he said, saying the last word with contempt

"Cause if you'll do anything to her, the demon lord will destroy you, and war will start, a war that the devils really can't afford right now, and the devils will be wiped out from existence. I'm sure you don't want to be the cause for your species extermination" he said with an evil smirk and quickly changed it back to a carefree smile.

"Well then, I finished my business here, so I'll take my leave..." the man said and opened a portal

"Who are you?" asked Sona

"Me?" he asked, turning his head around, and looked at them in the eyes, and they could see his eyes glow in purple, and they all started to faint, but not before they heard his last words:

"I'm your worst nightmare"

~~~ Flashback End ~~~

'For the time being, I need to inform Sona about it. Maybe I can even convince him to join my peerage…' she thought and then said to Akeno and Kiba:

"Let's go inform Sona about him. We can't allow him to roam around him without monitoring him"

"Yes, President!" both of them answered, and the three started to make their way to the Student Council office.