Demonic Freedom - DxD X Sister New Devil

After Lars left, Kazuki moved his gaze to Basara

"I'm assuming you want some answers?" he asked Basara, who nodded in response

"I guess that I should reintroduce myself. My name is Kazuki Naruse, the first son of the Demon Lord, Wilbert, and Mio's older brother, although… it looks like you stole that position from me..." Kazuki said with a teasing smirk

Basara looked surprised for a second and then said "I should've guessed it. You're like an older male version of Mio"

"Yeah. I don't really know how it works, but all of our family look like that, except for my mother and Mio's mother"

"You have different mothers?" Basara asked in surprised

"Yes. Unlike Mio, who got born from a human woman, whom my father truly loved, I was born from a political marriage between my father and the queen of the s.u.c.c.u.b.u.s race, making me half incubus, which really helps when you're handling women"

"How do you know my father?"

"We met in the war between the demons and the hero clan. A lot of things happened, and we ended up as friends" Kazuki said while thinking:

'I can't tell him the whole truth since Jin asked me not to tell him about his mothers…'

"I see. What did Takigawa meant when he said you died?"

"That's because everyone thinks so. Simply speaking, I faked my death recently"

"Why?"

"It doesn't matter right now. Now that you know who I am, it will be much easier to speak with you. From now on, I'm going to train you"

"Train me?"

"Yes. Right now, you can barely defeat Lars, and I need the one who protects my sister to be a lot stronger. You need to be at least at the Top Strongest 50 in the world"

"Top 50!?"

"Yes. That's why I'm going to train you, and I won't receive no as an answer. You're going to train with me every afternoon starting tomorrow. Today, I'm going to come to your house in the evening, and explain the situation to you, Mio, and Maria. Okay?"

"Yes. I want to become stronger, so I could protect Mio!"

"That's the attitude!" Kazuki said, moved next to him, and smacked him lightly on the back, and then wrapped his arm around Basara's neck, bringing Basara's ear closer to his mouth

"You need to decide if you're going to be her big brother or her lover, cause it's pretty obvious you love Mio~" Kazuki whispered, making Basara to blush, and when he was about to answer him, the bell rang, signaling the end of the break

Kazuki, hearing the bell, pushed Basara, saying:

"Go! You don't want to be late for class, do you?" Kazuki said, and suddenly took a cigarette out of his pocket, lighted it with magic, and started smoking. Basara took one more glance at Kazuki and then headed back to class.

A few minutes passed as Kazuki was smoking until the door to the roof was opened again, by another familiar figure. It was a black-haired woman, with green eyes, which had red round glasses over them, and a very voluptuous figure. Her outfit consisted of a green knitted turtleneck, a tight black mini-skirt along with black stockings, and a white lab coat.

"Well well. Look at who we have here... even if you change your appearance, and try to conceal your power, I'll always recognize you, Afureia. It certainly has been a while, hasn't it? We haven't met since the night after Raphaeline's trial. You look beautiful as ever" Kazuki said as he got closer to Afureia

"First, don't call me by my real name. Call me by my alias, Chisato Hasegawa. You can't know who's listening. Secondly, I've already told you, that night was a mistake. I've already forgotten about it" Chisato said with a frown

"Do you expect me to believe that? It was such a great night... even though it was your first time, we both had a blast, so I think that our bodies are pretty compatible. I don't think you can forget such a feeling... I know I don't..." Kazuki said as he got even closer to her, and started to c.a.r.e.s.s her hair

"Don't get ahead of yourself. You used my state of mind at that time, to sleep with me. Don't think of it more than what it was" Chisato said, and pushed him backward

"So cold..."

"Stop with the jokes, and answer me seriously: on that night, you didn't only use me to sleep with me, but after I fell asleep, you used me to get to the Divine Realm, and took Raphaeline out of the eternal prison, right?"

"That is a very harsh accusation... do you have anything to back it up?" Kazuki said with an amused smirk

"I told you to cut the crap! Where is she!?" Chisato said angrily

"Where else she would be? She's in the eternal prison!"

"...You won't tell me the truth, will you?"

"I honestly don't know what are you talking about. However, I can make assumptions about her condition. After all, her soul was separated from her body and then frozen, and her memories were erased. If she's still alive, she'll be in a comatose state, and she'll have to be given all of the necessities, so she could survive. I know that in the eternal prison within the Divine Realm, she won't receive the necessities, so she couldn't have survived in there" Kazuki explained

"And that's why you rescued her on that night, didn't you?"

"...You better go back now, or else, you'll be discovered by two of the devil kings, and that will be pretty problematic for you, won't it?" Kazuki said as he threw the cigarette on the floor, and stepped on it.

"...The same about you. Wouldn't it reveal that you're not dead?"

"Don't worry about me. I've prepared a very special game for them..." Kazuki said with a smirk, and then his body turned into a purple smoke, and when the smoke faded, he disappeared...

After Kazuki was gone, Chisato quickly returned to the nurse's office, and only after she did, both Sirzechs and Serafall teleported to the roof.

~~~ A few minutes earlier ~~~

~~~ With Serafall~~~

Serafall was in her office, doing paperwork when Sona suddenly teleported to her office.

"Sona-Chan! You came to visit me!! I'm so happy!! But, aren't you supposed to be at school right now?" Serafall said after attempting to hug Sona

"We have a situation at my school. Remember that 6 months ago, a demon came and told us that Mio Naruse-San will enroll in the school, and you told me to tell you whenever that demon visits again? So he's at my school right now"

Hearing that, Serafall's eyes widen in realization, as she thought:

'How could we forget!? His sister also enrolls in the school!'

"Go back to the school. I'll call Sirzechs and we'll come!" Serafall's said and teleported before Sona could even react

Serafall immediately arrived at Sirzechs's office, where she saw Sirzechs doing paperwork, and he had a surprised expression, as he saw her.

"Serafall, what are you doing here?"

"I think I have a clue about where Kazu-Chan is!!"

"What is it???"

"We forgot that his sister is in the same school as our sisters!! Sona-Chan came and told me that she saw the same one who informed them that his sister will enroll in the school, and by their description last time, we can assume it's Kazu-Chan!"

"How could we forget about it?? No, it doesn't matter now. Let's go" Sirzechs said and stood up, and the two teleported to the roof of Kuoh Academy.

As they arrived, Sirzechs said:

"First, let's try and ask his sister if she knows anything. We'll make Sona summon her to the student council office, and the boy who Rias recently told me that started to live with her" he said, and the two went to the Student Council office.

After a few minutes, Basara and Mio entered the room, and when they saw Sirzechs and Serafall, they immediately became alert, as they could sense that they were much stronger than them.

"I assume that you're Mio Naruse-San, and you're Basara Toujou-Kun? My name is Sirzechs Lucifer, and she's Serafall Leviathan, and we want to ask you a couple of questions"

"And what do two of the devil kings want from us?" asked Basara

"Naruse-San, have you seen your brother lately?" asked Sirzechs

"My brother?" Mio asked with a confused expression

"We're talking about your brother, Kazuki. Have you seen him lately?" asked Serafall

Hearing that, Basara thought:

'It's probably about Kazuki-San's fake death... they probably suspect that he's still alive...'

Mio, recognizing the name, as the one who visited the class during lunch break, was about to tell them about it, only for Basara to say first:

"We haven't seen him. Why are you looking for him?" he said and gave Mio a look that told her to not say anything

"We need to ask him about something" answered Sirzechs

"Well, I hope you'll find him. We'll tell you if we see him, but we need to go back to class, so if you'll excuse us..." Basara said and turned his back and they both exited the room, but not before Sirzechs and Serafall could see a demonic symbol at the back of Basara's shoulder

"...Did you see that?" Sirzechs asked Serafall, who nodded in approval. Then, they both rushed out of the room and went after them.

"Wait!" Sirzechs said as he touched Basara's shoulder, the one with the demonic symbol, but the moment he did, purple smoke appeared out of nowhere, and both Sirzechs and Serafall lost consciousness.

When they both woke up, they were floating in a dark place, when they suddenly heard a familiar voice:

"Well well well... who do we have here... Sirzechs Lucifer, the Crimson Satan, and Serafall Leviathan, the Pink Satan. It has been a while..." the voice said, as a purple flame appeared in front of them, and it seemed like the voice came out of the flame.

"Now, let's have a little chat, shall we?"