True Villain in DxD

I wonder, when did I start craving a power that was impossible to attain?

I looked for all ways to strengthen myself, but everything proved useless, I wanted to have the same power as those protagonists, but I knew it was impossible.

But I never gave up, and I finally got what I wanted, but it's not exactly what I wanted.

I always imagined myself ruling a world with overwhelming power, now I can rule the world, but is my power strange? I don't even know what it is.

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My first story, so don't get too heavy on the reviews, although they are always welcome.

Also, I am not fluent in English, but I will try to make it as readable as possible so that you can have a pleasant reading.