The Reincarnated Onmyoji Who Returned From Another World ~ I Was Reincarnated Into An Onmyoji Family On The Verge Of Decline, But Thanks To My Experience As A Hero Who Fought In Another World And The Magical Power Training I've Been Doing Ever Since I Was Born, This Life Seems Like It Will Be Easy ~

【Kill kill kill kill… I’ll kill everything, I’ll kill absolutely everything!】

【How long has it been since I’ve come to the mortal world! Kakakaka!】

【…Hm? I can’t take over at all. Why is that? Mmm!? I’m being inversely eroded!?】

In the midst of the dark, dark darkness I had sunk into, I could hear a woman’s voice. When I strained my eyes to look ahead in the dark place, what was there in the depths was a single woman dressed in Japanese clothing. She had glossy black hair that reached her waist and blood-red eyes. At first glance, she appeared to be nothing but a beautiful woman, but if you looked closely, two small horns were growing from her forehead. Above her head, a reddish-black ring that looked like an angel’s halo glowed ominously.

【Hm? Someone has come to this place?】

This is, well, this was… Inside my soul. I had the same sensation as when I had fought an opponent who’d interfered with souls in the other world.

【…A baby? A baby? That’s the owner of this body?】

In the darkness, the woman also noticed me crawling toward her and sent a shocked gaze my way.

【What’s happening? Y-you’re still a baby!? You, being a baby, not only repelled my interference but stepped into the soul realm…?】

If I remember correctly, within the soul realm, I should be able to do various things… Could I take my previous life’s form? …Yeah, I could do it. Changing my baby appearance, I took the same form as when I had died in my previous life.

【Wh-who are you!?】

“There’s no way I’d honestly answer your question, is there?”

Oh, I could speak. I could actually speak now. This felt good.

“Now, then. What’s happening here?”

【You’re the one who summoned me!】

“Ah, right?”

The woman in front of me was probably brought down through the shikigami descent ritual that my father was talking about.

“So you’re saying you’re my shikigami. I see, I see.”

【Ha! As if I’d become your shikigami… I’ll take your bodgyaaaaaaaaaaaaa!?】

I eroded the woman’s body without any restraint whatsoever. I already had considerable magical power. Unlike when I was just born, I could now fight.

【Wh-what is this technique…!? A technique premised on activation in a soul state!?】

I binded the opponent’s soul, then invaded her existence with my own magical power.

【Nuooooooooooooooooo!? Th-this is really bad!? At this rate I’ll lose! Wh-what are you making me into!】

The opponent also resisted, but it seemed my level of magical power manipulation was superior. In a struggle between my magical power and her magical power, the most important thing was the proficiency of power manipulation. Even more so when souls were laid bare against each other. I also possessed techniques for interfering with souls, and considering everything, I had an overwhelming advantage.

“I can’t exactly hand over my body, you know.”

If I were suddenly taken over by someone like this, it would trouble my father and mother too. The words I had first heard were all those of an antisocial element. I couldn’t let such a dangerous person run wild.

“Sealing technique.”

With me in the superior position, I further deployed sealing techniques.

“You’ve got a good setup here, don’t you?”

This must be the magic… no, sorcery that father had prepared for the shikigami. I enthusiastically utilized that sorcery that binded an opponent’s existence and manipulated them at will. I activated magic in a way that supported and strengthened this sorcery, chaining the opponent tightly.

【I… in such a placeee!】

“Sleep for now.”

Sealing complete. Now that this place had settled down, let me return my consciousness to its original location.

…

………

I returned my consciousness from the depths of my soul back to the location of my original body.

“U-unbelievable. You subdued the shikigami with your own power alone?”

Then, the first thing that jumped into my field of vision was my father’s expression, frozen in shock.

“…Is this what a genius is?”

“I-is our child, is Touya alright? He hasn’t drunk any milk, and am I okay too?”

“…Ah, he’s fine. He’s healthy too.”

I quietly listened in silence to the conversation between my father and mother, who were looking at me with concern.

“…”

So that’s how it was. The shikigami descent ritual.

My impression was that if I hadn’t been a reincarnator, I would have definitely been taken over. The way it took over magical power was abnormal, and I had managed to succeed only by doing magical power enhancement training to increase my magical power and devoting everything to controlling it.

I thought it was clearly a fatal and sloppy ritual, but… I see. The baby absorbed power from outside sources to make the ritual successful. To be precise, from the mother’s breast milk, sucking that life force to make it a subjugation ritual. This might be a world with less leeway than I thought.

“…Good. We can continue living together as a family.”

“Ah… that’s right. Ah, yes indeed… thank goodness.”

I quietly observed my parents, who showed expressions of relief, true relief from the bottom of their hearts. I remembered the other world… gaining power at the cost of sacrificing people. Seeing that sight…

“…Ah.”

I needed power in this world too, like when I was a hero. As a hero, as a brave one, I needed power to protect something. Power to not create hell. Let me seek power. Power enough to protect.

While looking at my parents who gazed at me lovingly and gently stroked me, I made that vow in my heart.