Chapter 15: Warning the Dragon and Devil and Entering the Dark.

After Issei got unconscious, Raiser moved closer to Issei. Then touched his left arm and closed his eyes.

When he reopened his eyes, he was inside a dark place burning with fire all over, and before him was a majestic Red Dragon standing tall as the sky and looking down on him.

When he saw the Dragon, he started observing the Dragon and trying to analyze what type of Dragon it was. Though in the view of the Dragon, it was as if he had frozen him in fear.

"I don't know how you came here, but you made a huge mistake by coming here. Though my host can't defeat you in the real world, here you are just an ant in front of me," Draig said with a prideful tone without considering the possibility of being overpowered by the opposite party. In his eyes, Raiser was nothing but a High-ranked Devil he killed left and right on his peak, nothing more, nothing less.

"If you know what's best, try not to struggle, I may consider killing you painlessly," Draig said as if showing kindness. But its playful eyes and the sadistic smile on his face failed him.

He opened his mouth and launched a fire blast with his iconic all-consuming flame. The flame once feared by everyone now blasted on him, but he looked at it with a burning gaze and welcomed it with open arms.

But unlike what the Dragon expected, the all-consuming flame didn't affect the Devil, and it looked as if it was a tamed beast and collected into his hands as he extended his palm.

Raiser, who stood still till now, started moving as he looked into the Dragon's eyes as if he was looking at a fool.

"You are nothing but a foolish energy dragon who can't even use his power to its full potential and treat yourself as standing on top and looking down upon all without even knowing who the opposite side is." Raiser sneered at the Dragon.

Before the Dragon lashed out, Raiser released his soul pressure, a vague outline of a mystical black and white bird flaming bird, with a size larger than the 'Great-Red'' formed before his eyes and caused him to shiver.

Seeing the fearful expression he wished to see on the Dragon, Raiser stopped his soul pressure.

"Now, shall we talk?" Raiser asked with a radiant smile. But that smile only caused the Dragon to shiver more.

"What can I do for you, sir? I expect you didn't come here only to mock me, sir." Draig asked politely with a mournful look.

"Now, your manners are much better. True, I don't come here only to mock you but also to give you work..."

"Yes sir, I will do as you expected and do as you wish," Draig said in a much more polite tone, and there was a trace of unhidden respect.

After that, he got out of the place, opened his eyes, and marched to the room beside his room, where Rias, the foolish princess, was staying.

Rias is very angry at her mother and Grafia, as after returning home, they also start blaming her for what happened. Deep down, she knows it was her fault, but her pride refuses to accept her deficiency.

After a long night of lectures, she was tired and wanted to sleep for the rest of the day, but she was woken up in the middle of her sleep to go to training. Even though she needs to train to defeat Raiser, she is reluctant to do it in his presence and bicker with them that it will expose her team's strengths and weaknesses. However, her mother knew it was just her excuse to avoid him.

Even if it was true, her mother knows, it will not make any difference as she already knows of him upgrading his bloodline. Not wanting to shatter her daughter's confidence, she hid that fact.

Not knowing her mother's thoughts, Rias got to the club with a depressed look and proceeded to the training ground arranged by her brother with his queen Grafia.

Hearing that she was supposed to be trained by Raiser, she kept quiet until Grafia went away to show her dissatisfaction. But when she learned Raiser was daring enough to kill a messenger in the council and still walking around as if he had no connection with the incident, she was worried if she could defeat him with a limited time.

She was sure that, with enough time, she might defeat Raiser with her destruction ability. It is one of the primordial elements.

Her lack of training in the past and constant pampering from her father and brother caused her to lag behind a lot. If beauty is the only thing she got, she will not be called a Crimson-Haired Ruin Princess and Princess of Destruction by everyone. She had the ability to back it up, but she never cared to train and remained weak.

Now in her room, she was sleeping because of exhaustion after thinking of a way to get revenge on Raiser. But she can't think of any way to do that.

In the middle of her sleep, she was disturbed once again. But this time, it was Raiser. He slammed open her door and entered her room uninvited, and by the time she woke up and gained clarity, Raiser was already sitting on the side of the bed.

"You, how dare you enter my room without my permission? Get out," Rias shouted at Raiser.

"I am still your fiancé and have the right to enter your room but let me tell you I will be inside the cave at the nearby mountain for a few days, and as I have already instructed them on their training schedule, tell them to follow that until I come out. And send Asia to the underground training room to heal Issei, and last but not least, don't touch him till I come, or else I will kill him next time," he said what he wanted and returned without giving her any chance to speak.

Although Rias was angry at his behavior, she had no choice but to do as he told her. She went to Asia to heal Issei.

After entering the cave, he looked at the entrance and said, "Let's talk whatever you want after the rating game. I am already on a tight schedule. If I didn't come out within ten days, change the date of the rating game. And don't ever enter the cave if you want to live. And don't be like your sister and let your pride consume you. Go back and wait for me to come out." leaving behind the Maou Lucifer gawking.

Inside the cave, he made a tunnel deep underground and a room free enough for him to move and meditate.

In his meditation state, he entered a pitch-black place covered in darkness.

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Next. Chapter 16: Yin births Yang &Yin-Yang technique.

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I re-edited grammar mistakes in it to my full capacity tell me if there are any more corrections.

@giovanni3245 and @ThreshGasm