44

When I get home, Mio and Maria greet me in their pajamas.

"Oni-chan, can we sleep with you tonight?" Mio asks.

"Please, big brother. You know you want to spend the night pressed between your two cute little sisters," Maria follows up.

I smile. "Alright, but no funny business tonight. We have a lot of serious training to do, and I don't want to get sidetracked. I'm going to say good night to everyone else, and I'll meet you in my bed in ten minutes. Alright?"

They both nod ""Un.""

My first stop after watching the two scamper off is with the fallen angels. I call Kalawarna and Mittelt into Raynare's room and sit them down.

"I'd like all of you to go to sleep. Try to relax your minds, and I'll pull your dream selves into a collective dreamscape so that we can train and I can get a better idea of what you're capable of and how best to improve your strength."

They look a little confused. "Y-you can do that?" Mittelt asks.

I nod. "I can now. With this, I can help you train and study to increase knowledge, and through knowledge, I can help you increase your power. I can also help your power grow through more direct means, but that will have to wait for now. This next week is somewhat critical, but after that, we should have a little time before the next major event. This weekend I plan to have the local devil peerages over to participate as well. During that time, I'd like to spend some one-on-one time with each of you and the other women to get to know each other."

They stare at me blankly. I guess I need to be more direct. "I'd like to invite each of you on a dream date this weekend."

Raynare, unsurprisingly, is excited by this idea. The other two blush once they understand what I'm saying. They'll be going on an actual date that isn't a trap to kill off some poor schmuck that they're targeting—seeing that they like the idea, I make a suggestion.

"Maybe we can even do one tonight. Since we'll have the time, I mean," I say. I can feel the energy of their interest prickle against my skin. I nod. "That's probably a good idea. We haven't spent much time just as people, and I'd like to get to know you all better. You know. Considering our relationship."

They all smile. It makes me wonder something. Angels are hierarchical, does the personality of the ones above them influence their own. I don't recall most of the other fallen angels being the psychopathic sadists that these three were in the early episodes. Maybe once Kokabiel was taken out of the equation, the problem subsided. It's a thought. I don't know if it is correct or not, but it would explain a bit of the horny Raynare.

The next stop is the Sherlock sisters; Selina looks terrified at first while Lieselotte seems defiant. "Don't do that," I say to Liese. "The more you fight and rebel against the curse, the worse it'll be. Right now, you're a hair's breadth from moaning a twitching on the ground begging me to fuck you."

Selina's eyes just about pop out of her head. I shake my head. "Relax, Selina. I won't do that unless she is actually willing. The most I'll do is force her to submit in order to alleviate the curse. At best, she'll be molested and sexually sated, wondering what the real thing would be like. At worst, she will be scooping my cum off her body and licking it off her fingers while wondering what the real thing would be like."

Pfft. "Arrogant much," Liese says

"Nope. If I were being arrogant, I would have said that you would offer to give me your sister's virginity to get me to fuck you in the ass."

Selina takes a step back, and Liese just scowls at me. I look at Selina and smile. "Don't worry so much. I wouldn't do that either. Although, I wouldn't mind getting to know each of you better in general. Which is one of the reasons I'm here. I'll be pulling the two of you into a dreamscape this evening. It's a great opportunity to learn about each other and also to improve our strengths."

They both frown a little. "Before you ask, this isn't the same as Yui Kurata's dream world. It-"

"You know Yui?" Liese asks, obviously excited. "Do you know where she is?"

I tilt my head. That is interesting. "I've met her, but only in a dream world, she pulled me into. I didn't realize she was missing."

"She went missing two years ago," Selina says. "No one has had contact with her since."

[Issei, I believe when Plus Ultra was attempting to facilitate the advancement of the Sage ability that the seed latched onto the dream world that Yui Kurata created as a potential medium for evolution.]

'And that's what allowed her to reach out to me?' I ask.

[I believe so.]

'Interesting. Can you locate that dream world again?'

[It was luck the first time, but I should be able to track the signal down.]

'Okay, let me know when you have her.'

"Well, it sounds like we'll have to rescue a damsel in distress at some point," I say, and both girls look at me with hopeful expressions. "For now, get ready to sleep. There are great benefits for all of us in the Dreamscape."

I leave the Sherlock sisters to make additional stops to speak with Zest and Asia to tell them the same thing, including the date idea to get to know them better. I didn't actually call it a date with them, just 'spending some time to get to know each other.'

Zest just accepts it as though it's an order from her master, and Asia is more excited than I'd ever seen her before. She's never really had friends, so I guess that makes sense. Zest has been in what amounts to an abusive relationship for her entire life.

After wishing the two a good night and placing a chaste kiss on Asia's cheek, causing her to blush fiercely. I head back to my room to find the Naruse sisters doing what they do best, looking deliciously fuckable.

Mio has that shy 'oh, I've never done this before,' look, while Maria looks like she's ready to do a dissertation on all the ways she's going to fuck me.

I scratch the back of my head and let out a sigh. "I said no funny business. We have a lot to do in the Dreamscape tonight, and everyone else is already getting ready," I say. They both get a little pouty at that. I roll my eyes. "There will be plenty of time once we get inside to spend some with each of you. You can choose how we use it... Within reason."

They're much happier with that answer. I lay down with the two cuties curled up against either side and close my eyes. As I try to drift off, I feel a small hand slide into my pants and wrap most of the way around my cock. I sigh. It's going to be a long night... I hope.

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It was indeed a long night, but not for the reasons you might expect. Instead, we underwent a long training cycle. One on one, one on two, two on two, group battles, one versus a group, practice, study, and a whole bunch of theory craft for all of it, we worked ourselves hard and refined our abilities. Ddraig had a shitload of experience from past wielders of the Boosted Gear and her own battles, all of which she shared with us.

The dream dates went well, though Zest didn't have much to say during the date because her entire life has revolved around Zolgear's whims. Oddly enough, he never laid a finger on her. Proof positive that he's insane.

Strangely, the only one in the group I had a sexual end of the date with was Mio. The rest said that they wanted their first time with me to be with their actual bodies. I agree entirely, but it was fun trying different things with Mio. We even managed to partially awaken the gravity magic that we each inherited from our mothers. It's not at full power yet, but it alone is enough to lay an ass whipping on anyone shy of Ultimate Class Devil strength... and fly... sorta.

In the process, I loosened the Seal on my Demon lineage a little more and refined my control of my Quirk and Boosted Gear. I can fully use the Scale Mail and even tap into the Juggernaut Drive if I want, but it seems a bit like overkill for most threats, though. Also, I'm not a fan of anything that shortens my life span, so I'm going to hold off until I can edit that particular flaw right out of there or I have perfect immortality.

Asia started learning magic, but the grimoire version I study isn't really a good fit with her. I'll have to think about how to fix that or find her a tutor for something different. She has that Dragon Tamer ability that I'm going to copy for myself. It'll be hilarious for dealing with whatever form Vali takes, but I'm not sure what path I should guide her along since she doesn't need to be reincarnated as a devil. I'll think about it.

My swordsmanship and magical theory improved significantly. In particular, thanks to the Sherlock sisters, my space-time magic made massive improvements. All of my mental abilities that work in conjunction with Dreamscape got qualitative increases as well. Sasami suggested uniting them all into a single higher-ranked ability which we did. After combining all relevant abilities, it cost thirty-nine hundred LP, but the result was an S-ranked mental realm called Mind Palace.

In addition to improvements to all relevant combined mental abilities, including Dreamscape growing a hundredfold and every hour of sleep being equivalent to a solid month of training time, I'm also functionally immune to mind control techniques and most other forms of influence. Also, Sasami can functionally combine her abilities with the Mind Palace to increase her effective rank to double S. What does that mean? Honestly, I'm not sure, but Sasami assures me that her efficiency will significantly improve, and hidden information will be easier to find.

Waking up is a pleasant experience since Mio and Maria are still cuddling against me. Mio opens her eyes and stretches up towards my mouth. I gently kiss her pink lips. "Good morning, little sister."

"Good morning, onii-chan," she says, snuggling back into my chest. She's quiet for a moment, and we lay in silence, my fingers brushing against her arm. Eventually, she breaks the silence. "I enjoyed what we did in your Dreamscape, but I still prefer your real body."

I just smile at that. Mio looks up at my face. "Will you make love to me in the real world soon?"

"I would like that," I say. She smiles and lays her head on my chest. Both of her hands are visible, but I can feel soft fingers stroking along my morning wood, and then a wet feeling engulfs the head.

The sneaky little succubus managed to scoot down my body while I was talking to Mio and now is running her tongue over my glans. Gently she massages my scrotum and works the shaft as her tongue and mouth slowly work their way further down and over my cock.

I'm not sure how Mio is missing this, but I'm in a pleasant heaven. A sweet, relaxing-

BANG. "I want in! I'll even-"

The door to the room slams open, and a blond barely wearing anything barges in. Mio jumps, flinging the covers off, revealing a disheveled Maria, her lips wrapped around my cock about a third of the way down the length.

Liese stands there with her mouth hanging open, words caught in her throat, and her eyes glued to Maria and my cock her lips are wrapped around. Arcane circles light the room as Mio comes a fraction of a second from blasting Liese with demon magic.

I look down at the cute face of Maria as she slowly backs up off the blowjob until she finally releases the head with an audible pop. She opens her eyes and glares hatefully at Liese. "Good slaves know to knock before interrupting their master's rest," she says. Wow. Maria is pissed off.

Liese bristles. "I'm not a-"

"Yes, you are. That's your current designation within the harem," Maria says. "In fact, you are still at the bottom, below even those crows in the hall."

This is new for Maria. She's not usually this... angry. Even Mio is looking at her, surprised. I frown a little.

"Maria, is everything okay?" I ask.

She turns her head to look at me with tears in her eyes. Immediately, I pull her into my arms. "What's wrong, sweetheart?"

"S-she ruined it," Maria says, sniffing back tears. Mio pushes Liese out the door and closes it behind them, leaving Maria and me alone. Maria's eyes rimmed in red release a single tear that starts to trail down her cheek. I wipe it away with my thumb.

"Keep going."

She takes a deep breath and holds it for a moment to calm down. Releasing it, she unloads. "Before last night's training, I was a little nervous about the date on Sunday, but during the training, two things happened. First, Mio became a lot more assertive with you sexually, which threw me off, and second, I realized how long it was going to be until Sunday."

I frown. "What do you mean?"

"We were inside the Dreamscape for what felt like four months. We were there for what felt like seven weeks, and then your ability improved, and then, every hour in the real world would be a month in the Dreamscape. That means if we train tonight and Saturday night, I will have waited to have sex with you for almost a year and a half," She looks up at me with a frantic expression. "Do you understand how long that is to wait for a succubus who has fallen in love?"

It's not funny, but it kind of is. I manage not to chuckle, but only just barely. I do smile, though, and leaning forward, I kiss her gently. When I drawback, I look her in the eyes. "I love you, too."

She wraps her arms around my neck and buries her face in my neck. "So," I say. "How do we want to fix this? Would you like me to stay home from school today and we can have our date now? 'Cause, I'll do it."

She shakes her head. "No. I want the bastard that killed Mio's foster family and thought he could threaten my family dead so I can go into our time together with a clear heart."

I frown. "Well, what was this all about then?"

"She interrupted me giving you a blowjob!" she says. "That's that's blasphemy. Do you know how many blowjobs you've let me give you?"

I think about it, but before I can come up with an answer, she says, "None. Every time I started to do things to you, you flip the script, and I'm the one cumming like a firehose. It's really bad for my pride as a succubus."

I do chuckle now. "Sorry about that. I'm a little selfish in that way. To be fair, though, you do taste delicious."

"Of course I do. I'm a succubus after all."

"How about this," I say. "Let's go take a bath, and you can do to me whatever you want... within reason."

She rolls her eyes. "I know where your hard limits are. I won't overstep."

We sit just holding each other for a moment. "Hey, Maria?"

"Hmm?"

"Once we've dealt with Zolgear, we're going to have our date and make sweet, sweet love together, but after we're done with that, I'm going to fuck you so hard, your mom will feel it in the Demon Realm."

I can feel her smile. "Thanks, Issei."

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.

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Our bath time was well spent. Maria was happy but a little annoyed that I'd 'been keeping that delicious cum from her mouth for so long,' Her words, not mine. She swore she would milk me dry every night, but I told her she might need to share, or the other girls would get upset.

There is one other thing we need to talk about while we're alone.

"Maria," I say while brushing her hair.

"Yes, big brother?" she says with a relaxed, almost languid tone.

"I figured out who yours and Mio's father is."

She freezes. "Your mother never told you?"

She shakes her head. "She said it was a secret that could be dangerous if the wrong people knew."

"Well, she wasn't wrong, but now the wrong people know, and it's become dangerous. Some of those people are the ones that have tried to grab Mio. At first, I thought they were working with Zolgear, but now it appears they want to use her to pressure your father."

Maria looks back at me. "Do you want to know?" I ask.

She nods. "It's Rias' brother, Sirzechs Lucifer, one of the four Satans."

Her eyes widen. "That's why mom and Mio's mother had to give up their power!"

I frown. "I'm sorry, I don't follow. Why did they have to give up their power?"

"Oh! Certain supernatural races have trouble crossbreeding. It's like their inherent energies conflict and cause rejection. The fetus can't survive without a large amount of external power to smooth the disruptions and force the conflicting energies into harmony.

This is particularly true with more powerful beings. Neither of the energies wants to cede control, and the stronger they are, the more they reject the other. With significant power disparities, this is less of an issue.

If, for instance, Sirzechs had mated with a lesser succubus or even a greater succubus, his energy would have totally overwhelmed theirs. The resulting child would have been born a devil, possibly with some of the succubus mother's traits. In a situation where the parents have similar levels of power, such as a Satan and a Demon Lord or even a particularly powerful Succubus Queen, those energies would fight tooth and nail to maintain dominance, even at the cost of destruction.

My and Mio's mom used their incredibly powerful energy to create what was effectively a battery of external power to smooth the disruptions and keep our conflicting energies stable."

"And because Sirzechs energy is the Power of Destruction..."

"Mom had to use even more energy to resist that power. It's why she's become so weak and even reverted to her immature form."

'Sasami, does that sound about right?'

[It appears to be the case, Issei.]

"Can only one parent supply the energy to maintain the balance?"

Maria shakes her head. "No. Usually, both parents provide the necessary energy to stabilize the child. It's a significant burden and is easier to deal with when shared."

"So, I'm guessing Sirzechs didn't want to take the hit to his power and instead opted to be a deadbeat dad. That explains why Grayfia and Venelana are pissed at him. They probably think he left his children to die."

"He sorta did," Maria says with undisguised anger. "If our moms didn't sacrifice everything, then we would have died before ever being born. I always thought it was just something wrong with me and that I stole her power. She gave it to me so I could live."

Tears threaten to leak from Maria once more. I can't tell you how much I hate seeing her cry. "Hey, now," I say, pulling her back to my chest. "I hope those are tears of joy for how much your mom loves you."

She chokes out a bitter laugh. "Yeah. They are, but... Issei, do you know why Sirzechs wouldn't help to balance the energies?"

I shrug. "I can guess. Based on what I've seen and heard, I'd guess Sirzechs was scared of losing some of his power. There are a lot of bag guys among the devils that would love a shot at taking him and the devil power structure down. The weakest link and all that. The rest is politics, I imagine. Is there any stigma attached to blending the species or some nonsense like that?"

"Only among certain factions that preach blood purity," she says. "At least among the demons. I'm not sure how it is among the devils."

"Well, there you go. Sirzechs didn't help because he was afraid of becoming vulnerable. He isn't acknowledging you after you survived because that could harm him politically, which could have consequences for the Underworld. That's my guess anyway."

"So, I can't even hate him because he had sound reasons."

"Bullshit, you can't. Sirzechs decided to risk having a child, knowing the potential consequences of mixed-species breeding. To then abandon the mothers and children because it wasn't politically expedient is still a shitty thing to do. Grayfia was more pissed about him abandoning you and Mio than she was about the infidelity, and she definitely believes he was in the wrong."

"She knows?"

"Oh, yeah. She had a virgin alarm on Rias. I'm positive she knew exactly if and when her hubby was stepping out. I'm surprised they were able to keep your identities secret... well, for as long as they did. Someone in the Phenex clan must have pieced things together, or someone in the Demon Realm did and leaked it to the devils. Anyway, it's all going to come to light soon enough."

Maria looks back at me. "What do you mean?"

"The rating game for Rias's engagement. I figure it's time you and Mio meet your father and grandparents. Don't you?"

She leans back again, and I wrap my arms around her waist. After a moment, she cocks her head to the side. "Issei?"

"Yeah?"

"Are you planning to have a three-generation oyakodon?"

My smile is an evil one.