The Devil Sage Of Perfect Harmony

10 Years Later and Sage Mode

It's been ten years already, and I'm currently practicing Senjutsu at the training ground of Gremory Household.

Yeah, it turns out that my mom is actually a new member of Venelana's peerage. My father died a few months ago, and if not for Venelana, then my mother would've died too along with me while she was still pregnant.

My mother, Jully Diablus, is a low-class devil serving under Venelana Gremory.

And, just as I thought, me and Rias became friends, childhood friend to be exact. We were born at the same time, at the same hospital, and with my mother being the best friend of Venelana, it's as expected that me and Rias will too.

Anyway, currently I was meditating and absorbing a crazy amount of ki from the surroundings. The massive flaw of senjutsu is while it lets the me read and handle spirit power, it could also take in the malice and will that flows in the world therefore if I used it in an incorrect manner, then I will be corrupted.

However, this flaw is not a flaw to me at all! Even though I'm crazily absorbing the ki along with its malice, I control my demonic energy to absorb and take control of all the malice that I keep absorbing.

This allows me to use Senjutsu as much as I like without worrying for any drawbacks.

And, using Senjutsu along with Demonic Energy, and cast a magic with those two energy combined, my magic attacks will be several times more powerful.

Yes, just like Sage Mode.

Well, I also call it Sage Mode, in this mode I can have a nigh-unlimited amount of energy by constantly absorbing the Ki from the surroundings.

Feeling that I have enough ki, I stop absorbing and stood up, even though I can infinitely absorb the ki from the surroundings without any worry, my body couldn't handle a large amount of it and I might explode.

"Sage Magic: Inferno Overdrive!"

I stretch my right hand forward and a magic circle appeared, followed by a large and wide swirling blue-green flames.

The AOE(Area of Effect) is so large that half of the field he was using was burnt and the ground was destroyed.

That single attack took a large amount of Demonic-Ki I had, I'm now only down to 30% of my reserve.

However, I still wasn't satisfied, that attack just now can't be considered as my unique ability or signature move, it's just a stronger fire magic with a cool name I copied from an anime in my past life.

"Dammit!"

Currently, my power level is just a little bit stronger than Issei at the end of the 10 days training before the Rating Game with Riser Phenex.

And that too while using my Sage-Mode. I truly couldn't understand how that pervert manage to increase his power in just a short amount of time!

Of right, he has the fucking Boosted Gear! A Longinus Tier Sacred Gear capable of slaying Gods and Satans!

"Fuck! I envy that pervert! Bastard! I fucking hate him!"

"Sei-kun! Sei-kun! Sei-kun!"

Ahhh~ this voice, this voice is so familiar to me, I always hear this voice every single day of my life.

I faced the owner of the voice, only to find a red blur crashing into me.

"What's up, Rias?"

Oh right, my name, I'm Seiya Diablus.