"Awaken! BOOSTED GEAR." Issei shouted, holding out his hand.

A red gauntlet formed on his forearm. Deciding to admire it later, he decided to get to work immediately.

BOOST BOOST BOOST BOOST

"Partner. Four is enough. You can handle only so much." Ddraig warned.

"I know. But is it enough?" Issei wondered as his body strained under the power.

"No. But it should be enough to start the process. Once you start the process, your body will get stronger and it should be able to continue." Ddraig assured him.

"OK. Let's start this. Issei channeled the energy from Ddraig to his new sacred gear. Instantly, the gear was recharged and started to work. Issei felt his body change, becoming stronger. He also felt new powers.

"Okay. It looks like you got some powers. You should have the raw strength capacity of a low-end mid-class devil now. But don't fight her now. Your body can't handle it anymore. You need to rest." Ddraig informed Issei.

Raynare fell to the ground as her powers left her body, becoming weaker than a low class fallen angel. Confused and terrified, she got up and started flying back to her stronghold without a word to Issei. She needed to gather her thoughts and figure out what sacred gear the boy possessed.

"Don't chase her. You need to rest. We can get her later." Ddraig advised Issei.

"I don't care, she is not getting away."

Issei said, too enraged to think tactically. It had been like this for a while. Even when he knew it was a bad idea, he still followed through with it out of sheer stubbornness. Concentrating on his sacred gear, Issei boosted three more times when he hit his limit. Though his body screamed in protest, Issei didn't care.

"FORBIDDEN BALOR VIEW!"

He activated the technique of the sacred gear he stole a week ago. Time froze around Raynare as she was flying away, though she didn't know it. Issei took a moment to comprehend the scene. Not a single change can be made in the field by a low-class fallen angel as Raynare was now. Issei lifted off the ground and charged straight at her, stopping inches from her face. He then placed his hand on her head and began draining what little energy she had left. It took only a few seconds till only the bare minimum was left to survive. The time spell was lifted as Issei and Raynare both fell to the ground, unconscious.

Throughout all this, he didn't notice the black wings that had sprung from his shoulder. It was purely instinctual to him now, as innate to him as it is to the devils that possessed it first.

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Issei woke up and immediately realized he didn't land right. His right shoulder hurt like hell and his ribs were on fire. Looking to his right, he saw Raynare still passed out on the ground as well. He felt a certain pleasure to see he had succeeded in defeating her, even if it was at the cost of his health.

"Ddraig, are you there?" Issei asked mentally, but there was no answer. Wondering what he should do now, he decided to just lay there until something happened, trying to suppress the pain. He wondered if maybe he should have drained the power from the devils from his school first. But that could never work if Raynare could hurt him this badly, though she technically never injured him. Thinking deeply about the red-haired devil, he didn't notice the magic circle until it was glowing brightly. A red-haired girl stepped out from it, one he recognized immediately.

Rias Gremory.

"What was she doing here?" was his first thought upon seeing her. As he was now, she could kill him. But, then an idea formed on his head. It was a crazy, suicidal idea, but still, an idea that might actually save his life if done right. Deciding to act on it, he closed his eyes and pretended to be unconscious.

Rias Gremory looked at the boy who had summoned her. It was a kid her age, one she had seen around her school so much, though he became less spoken of in the last two years. Deciding to check it out, she realized that his injuries will kill him very soon if untreated. To his right was a fallen angel. She assumed they had a fight. Impressive that he managed to make a draw despite being human, though she sensed a powerful sacred gear inside him. Curiously, she felt with her magic to see how many pieces he would need to be reincarnated and drew a sharp gasp.

"Eight pawn pieces." She exclaimed out loud. This was highly unusual. Just how much potential did he have? She needed him as her servant. After all, she had many highly unusual servants; one more would make the collection even better. Pulling her eight pawn pieces out, she thanked her foresight for bringing all her unused pieces with her. She held them above his heart and watched as they absorbed inside him. Hugging him tightly while ignoring the fallen angel, she began the process of healing him. Just when she thought the most critical injuries have healed and all he required was his stamina restored, Issei made his move.

Rias felt something strange as her demonic powers began to leave her body rapidly. Jumping away from the boy, she wondered if he had a holy ability-related sacred gear. Trying to stop the drain, she found she was unable to.

Issei felt the energy enter him. His power that developed after absorbing Raynare's meant that he could drain powers from others and use it up to a point without needing to use Boosted Gear at all. He also felt something else. As he recovered, he felt smarter and filled with knowledge from Raynare and Rias.

Rias dropped to her knees as her power left her completely and all of her knowledge of demonic power and technique left her. Thankfully, her personality was intact.

Deciding that it was enough for today, Issei constructed a teleportation circle and headed to his apartment. But before that, he needed to do one last thing. He used the telekinesis that he received from Rias to gather the bodies of Raynare and Rias in one place. Then he searched and found an imprisonment spell in his mind, a spell Rias used to put stray devils in a cage to transport when the higher-ups wanted them alive. Concentrating on the spell, he held out his hand when the faint outline of a cage appeared around the two girls, but then disappeared promptly. Realizing that he simply didn't have enough power to sustain it, Issei decided for the next best thing.

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When Issei woke up, he was surprised to see his clock read 7 pm.

"What was going on?" He wondered he should have passed out for the night; the strain on his body was unbelievable. Then he saw the day on his watch, it has been two days since the incident. Deciding to get up and examine his injuries, he stopped when Ddraig spoke,

"You are awake, that's good, it appears the power of the devil healed you, although not completely."

"Ddraig-what happened, I tried to talk to you but you didn't respond, are you alright?" Issei asked, glad to hear his partner's voice.

"Yeah, the fallen angels' power had some holy element to it that messed with the devil ones you got earlier. It interfered with the connection. Alright now, but you need more energy to complete the full integration process." Ddraig explained.

"Yeah, you said there were other devils, right? Let's go get energy from them as fast as possible.' Issei asked.

"Yeah, you should also capture the other fallen angels as fast as you can, if she alerts enough of her comrades, this could get dangerous."

Ddraig replied, slightly worried.

"She had been trying to contact them for a while now."

Looking to his right, he flashed back to what he did when he couldn't do the imprisonment spell.

======Flashback=======

Issei activated the transportation circle after he dragged both Raynare and Rias inside it. He was deposited moments later inside his apartment. Looking around, he picked two chairs and put the girls there. Raising his hand, he began draining them even more, right down to their life forces until only a sliver remained. Revitalized slightly, he waved his hand and suddenly the blood vanished from his body and his clothes were clean. He felt as though he had taken a shower.

"I could get used to this." He muttered. Deciding to put his plan into action, he pulled what money he had from the drawer and was nearly out of his apartment, when another thought struck him. Rias lived in the human world; does she have human money too? Deciding to check around, he had another idea struck him. His analysis of both devils and fallen angels was not complete. What if they recovered enough? He pushed the thought away from himself. That wasn't possible. He needed to reinsert their life force back inside for that to happen. He pulled a small bag from Rias's shirt pocket and looked inside. A large amount of cash was there. And a shining, black credit card he instantly recognized as unlimited.

"This could be fun." He exclaimed to himself. Deciding to put the two girls in his tiny closet, he locked it and left the apartment. Arriving at the hardware store, he found what he was looking for, a large cage that would be enough for the two girls, barely. He also brought ropes and chains and, from the junk pile, several pairs of handcuffs from the pawnshop beside it. Stopping to make a huge purchase at the local fast food shop, he headed for his apartment. It would have been better not to use Rias's card to pay for his purchases, but the money he had was not enough. Stopping at a few ATM booths, he drained all the money from there as he made his way back.

It was nearly midnight when he arrived back. He had taken a fewl stops on his way back, sitting down on the benches as he ate and recovered his stamina. When he arrived, he saw a delivery truck had dropped off the cage. Summoning the last bit of demonic power, he carried it back to his apartment. He was relieved to find the girls exactly as he left them. Pulling out the chains and handcuffs, he tied them up securely to each other and put some duct tape on their mouth to prevent them from screaming and bringing in his neighbors. He hoped if they woke up, they would be busy fighting one another inside the cage if they got out. It was an old tactic used by the Egyptians to trap demonic beasts. He remembered his mother reading it to him as a child. Dragging his body to the bed, he gave in to sleep, though not before wondering what happened to Ddraig.

=======Flashback End========

The two girls he had caged in his room woke up a day later when Issei gave them back their life force. He really wanted to talk to them. The sheer exhaustion of overusing his power was present, but the devil power of healing had managed to counter that somewhat.

Both Rias and Raynare woke up at the same time. Rias looked terrified to be tied up in a cage, but Raynare was calm. As she looked around and took in the situation she was in, she had an idea. Issei removed the tape from the girl's mouths. Rias spoke first.

"Issei-kun, who are you? Let me go immediately." She demanded in her commanding voice. She knew it won't work, though. She couldn't feel her demonic power or the power of destruction. Neither could she feel any of the power she previously had.

"I do not think so, devil Rias Gremory, sister of Maou Lucifer."

Issei replied. "I have some questions to ask you. Did you ever manipulate my memory?"

Rias thought for a second and then remembered, vaguely, wiping Issei's memory several times. She never paid any attention to it. Deciding lying won't do her any good, she decided to be truthful.

"Yes. Issei-kun, I did it several times. I am sorry." She replied, hanging her head.

Issei was livid as he asked her another question, "Did you know that you also permanently damaged my mind while doing so?"

"What, I would never do that. What gave you that idea?" Rias asked, suddenly at his tone.

"Yes My new power allows me to scan everything. It gave me some interesting info a few hours ago. But let's leave that aside. Give me a reason I shouldn't kill you for ruining my life." Issei asked, picking up a dagger from the table and looking down at Rias below in the cage.

"Issei-kun. I am sorry. I will make it up to you. Please." Rias pleaded, her pride cast aside for the primal fear of death.

"How about you become my slave?" Issei asked. The idea had hit him a few hours before when he received the details from his sacred gear.

Rias was surprised before she realized what he was getting at. He was talking about the devil pieces she put inside him. Something she did without asking his opinion. She could have just healed him and then asked him to join, after all.

"Issei-kun, are you sure you won't have it any other way?" Rias tried one last time.

"No. An eye for an eye. That is how it should be." Issei replied.

Rias considered it. There was no way he could control her. Once her servants and brother found out where she was, she would be rescued immediately. All she had to do now was pretend.

"Very well. Issei-kun. If that is what you want." She said finally.

Issei frowned; he could tell she didn't mean it. But that didn't matter. Whatever hope for the rescue she had, it won't come. He focused on the other girl who has been quiet through this whole exchange.

"Raynare, do you have something to say?" Issei asked venomously.

"Well, I have been defeated by a human. What can I say?" She replied dejectedly.

"How about, where the rest of your team is at right now? Then I can dispatch you. You are taking up space." Issei replied seething to the girl who tried to deceive him.

Raynare considered. If she didn't, he would kill her now. But she didn't want to betray her comrades. Then another idea struck her.

"Issei-kun, if I am not mistaken, you are not fully healed now, right?" She asked.

Issei wondered where she was going with this. She must know, injured or not, she couldn't defeat him now that her power is gone.

"Why do you ask?" He questioned her back suspiciously.

"Well, if I give you a way to fully heal, and recover from injuries instantly, would you forgive me?"

Now was Issei's turn to consider her offer. He couldn't read her mind and just find out what she knew, as that wasn't academic information. He did need to be healed badly, after all. After considering, it further, he answered,

"Alright. But you are not getting freedom; you will serve as my slave forever, agreed?"

"Okay. I accept." Raynare answered. In reality, she was having the same thought run through her head as Rias.

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It was a week later when Issei recovered enough to get to the old school building. This past week had been interesting. Arriving at the doorway, he used his newfound senses to gauge the powers there. "It appeared there was a humungous amount of latent potential there. It was at least to the level of several ultimate class devils.

But right now, it was only mid-class and one high class. It was still capable of matching him though. Right now, he only had the power of one high-class devil, albeit his sacred gear would level the playing field in his favor. Deciding to start the draining process, he began concentrating but was interrupted when a girl with long black hair opened the door and greeted him,

"Hello, Issei-kun. Did you need something?"

End chapter

Authors note: Alright, here is the next chapter: Please Review. If you liked it and want me to continue, then I will. Otherwise, I will probably put it on hold for a while. Honestly, I am not sure about the pacing. To me, it feels a bit too rushed. Also, Issei is OOC. I am not sure if I am doing this right. What do you think?