Starting an Empire in DxD world

Somehow I got transmigrated to DxD world and become the older brother Hyoudou Issei. There are many powerful beings out there that can become my potential enemy. Since my brother will be a longinus user, my family will be targeted and that includes me as well. With that in mind, I need to get stronger and build my own force.

With that in his mind, with his system, he decided to build his own empire in that world.
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Disclaimer: I don't own the cover pic, or the characters besides the OCs, or the works those characters originate from.

Main World - High School DxD
Crossover - ???

I'll decide if I want more later on.

Release Schedule: 3-4 times/week