Riser Phenex? DXD SI. Multicross?

Author: KAIOSHIN

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I put Valerie in her bed, she is already reincarnated as a mutant pawn. Although sleeping. I look at her again. It seems she has awakened her Sacred Gear. She had kept it bottled up for so long. Sacred gear manifests itself in crises as well as strong feelings. But the mutant piece, all of this must have triggered her.

I leave the new mutant pawn in her bed, and silently follow Tsunade to where Gasper is.

**

I don't walk far, and I'm interrupted by my mother who is standing with her arms crossed over her chest.

"Riser, right now the Baby is very dangerous. Only me, Tsunade and you, we would not be stopped by his Sacred Gear. I had to get the baby. The maid was standing cleaning the shelf. If I hadn't come to check, she would still be there." (A/N: This shows that his mother knows that the two are low-satan. So to speak.)

"It's okay mom. I have some ideas to help him with his Sacred Gear. Although, for now it would be best to leave it to me and Tsunade to take care of him."

"I would suggest sealing his energy, using runes. Thanks to my teachings I'm sure you're able to use runes. But it looks like you have some way to deal with his Sacred Gear."

"Yes, mother. Let's just say I may have made an amulet with my energy for precisely that. And it also interrupts any unintentional or subconscious magic casting from him." I tell my mother hiding the fact that I can nullify the divine. I created an amulet with this stored capability. A brooch, which has the ability to deactivate a Sacred Gear regardless of who it is. Although the brooch is easily deactivated, it is possible to also create an ingestion pill or even a tattoo.

I arrive at the room where there were many maids who were from my parents' and brothers' Harem. They were all looking inside as if they didn't want to stay there.

As soon as I arrive, all the maids stop whispering and open up so I can pass through. I then move to where the bedroom is and see what looks like a disco? I think Gasper is turning it on and off. I ignore everyone looking scared, and simply use my [Divine Nullifier] ability.

And everything stops, as if the energy had run out, but for the most attentive they immediately knew. Especially Rumix Phenex who watched her son with a thrilled smile, almost as if she were seeing someone in her son. ( ͡° ͜ʖ ͡°)

I take the brooch that I made into a necklace and put it around the little Gasper's neck. I take a mutant bishop piece and place it on his chest. I know I didn't say anything to him. After all he's a baby, but when he gets older I'll explain it to him.

Having finished this great event, Riser turns and returns to where the maids are.

"Now everything is fine. There will be no more problems. And you can now change him, clean him and feed him without any issues." He stated looking at the maids, who nod their heads.

A maid entered the quarters of the new peerage member, and returned to cleaning the room. ["I believe each maid can be a wet nurse if they want. After all, lactation magic exists, which is why I still have good sessions with Tsunade."] I continue thinking about the Dhampir. As Dhampirs they can eat normal food, but it is still better nourished by drinking blood. All the maids disperse, leaving only Tsunade and Rumix behind.

"We need to talk about your power. I saw someone using this power before. And I'm sure who it is." Stated Rumix Phenex, looking at her son.

**

After I had a talk with my mother, she spoke about the power of the original Lucifer, while looking at me, seriously. She began talking about how he was a great King, how everyone followed him not only for his power, but how with his voice everyone heard his will. And how she saw me get the whole child group to listen to me. Those coincidences are too high. So the question came.

"Son, are you Lucifer? Or his Reincarnation?"

"No, mother. I am not his reincarnation or Lucifer himself. "I cannot lie to you, mother". But I do have the ability to Nullify the Divine, nullifying and canceling Sacred Gears. "So his mother hugged him and smashed him into her bosom. (A/N: Here we see the MC lying in parts. Or omitting crucial parts. He obviously won't tell all his powers. He only confirmed what was undeniable to everyone.)

"You really are amazing, my baby." And Rumix continued to caress her "baby".

"Tomorrow will be the inauguration of my power plant. Will you be there?" I murmur between her breasts, as I turn my face to look at her. She just smiles at me.

**

(The Next Day)

On the day of the inauguration of my new power source, I only invited people close to me. I didn't want great exposure to the underworld, but at the same time this was a milestone. A 7 year old devil child, creating something that no other did. Not even Ajuka at this age. And of course comparing a genuine child with a reincarnated one is difficult. Unfortunately when inviting Latia I had to indirectly invite her Cousin as well, luckily I managed to make it so he wouldn't come with the letter. (A/N: Picture this but for Latia not for you. And this is what I was thinking hahaha.)

So I invited my friends of course: Latia, Seekvaira, Sona, Rias, Sairaorg as well as invited the parents of the members. But to my surprise 3 of the Satans showed up, two of them would make sense after all they were their older siblings. But Ajuka coming and with a look, Enthused? Not only that why the hell does Serafall still wear her super revealing Leviathan dress?

"Greetings, Maou Lucifer, Maou Leviathan, Maou Beelzebub." I bow to the Maous.

"Young Phenex, it seems you are already following your dream." Said Maou Beelzebub.

I look at Beelzebub with my Lucifer ability to see what his desire was. I only feel the desire for knowledge, in knowing what a "potential" could show. His interest is not just general knowledge and growth of the devil in the underworld. Interesting indeed.

"You grew strong my boy." Said the current Maou Lucifer, trying to smile, but only showing a strange smile.

Looking at the current Lucifer with my ability. I see that he is a little reluctant about what has happened. Rias was liking me too much apparently, to the point that Maou Lucifer was very Jealous. But at the same time he just wanted Rias' happiness, so he is undecided about it.

"Little Sona has missed you so much! She could hardly wait to challenge you to a chess match." Said Serafall and apparently she is blushing?

I was fascinated by the things I discovered with my ability. Those dreams that Serafall had... showed a side of her that he never imagined. Who would have thought that energetic, playful girl hid such desires? I could not deny feeling flattered. And maybe a little curious too.

Should I tease her a little the next time they meet in private? Just to see what her reaction would be? I smiled at the corner of my mouth. It was going to be fun to find out.