Mutated Piece

Everyone, i have an announcement"

"... let me guess, another shocking"

"... maybe. Anyway, i want all of you to come to see my most dangerous servant. Issei, maybe he is more dangerous than you, at now"

"Wow, that's wonderful"

Issei is not lying. At this time everyone can compare to him in power will be welcome.

The team's main fighters now are Rias, Akeno, Koneko and Issei. Koneko is weaker than the rest, Akeno's devil power is not strong enough compare to Rias, and Issei can't always help the team as the White Dragon Emperor will interfere the moment he see Issei use Balance Breaker. Even if Kiba and Xenovia replace them, Durandal will drain Xenovia's strength out quickly, and Kiba needs more times to master his newfound Balance Breaker.

"I know what you are thinking, but he is not that kind of strong"

"... what do you mean ?"

"Follow me"

Go to the old abandoned storage room, Rias opens something like a seal, and a beautiful shy blonde girl appears.

But Issei has a wrong feeling.

"That's a boy"

"... thanks, partner"

Now he knows what is his wrong feeling. A boy in girly appearance.

And even in personality.

"No, no ... i don't want to go outside ..."

"... this boy is ... the one that can be more dangerous than me ?"

"Actually, partner, i can sense a powerful aura from him"

If Draigg said that, then that's true. But this trap's persomality ... he is like a supporter like Asia.

Suddenly, the boy release a darkness surrounding around and everyone is unmoving, even Issei.

"What ..."

"Gasper, stop !"

As Rias shouts, the boy returns all the darkness and everyone moves again.

"What happened ..."

"He is Gasper Vladi, a half vampire with Sacred Gear can control darkness and freeze the time ... but he can't control it. Because of that, i has to use a mutated piece to give him an equal devil power to calm down the Sacred Gear"

"Mutated piece ?"

"A devil piece that contains power equal to High-class Devil and can evolve its user's potential to its limit, but sometimes by the cost of life"

So, this boy - named Gasper - can contain a powerful power, but can't control it, and very scared of the outside.