Incubus Cutthroat: Devil Destroyers - The Requiem of Hell

Gratius Rosseau has appeared in Renobevia and before Ignazio Nero. Nero started to question him. Nero asked if Gratius was intriguing. Gratius replied that it might be good if we prove it through a small test. Nero agreed to it.
Gratius explained," the rules of the game are simple. Neither of us will use Hael or Zael, we will just fight plainly without any mask. When one of them is knocked to the ground, he will lose." Nero said," I think I got someone to relieve my stress on, I thank the heavens for this." Nero took and stone from the ground and threw it in the air. When the stone touches the ground, the match will begin. 

The stone touched the ground and both of them took their fighting poses. Nero approached Gratius with insane speed and took his arm to punch him. Gratius also took his arm and both of them ouched at each other's arm simultaneously. The ground just shattered due to the impact and the shock waves were felt all over. They did it repetitively and stepped back instantly. Nero appeared before Gratius to punch him in the face, however the punch was blocked and Gratius took his arm to punch Nero. However, it was also blocked instantly. Nero jumped into the air and connected a gravitational hit. However, Gratius dodged that and took his arm to punch and again and it was the same result. It was blocked. They stopped the fight.
Nero asked what Gratius's objective was. Gratius replied that it was to meet a certain person called Jean Cassel. Nero replied that he was no longer alive. Gratius asked what if your other half was alive inside a person called Rutherford Beschimer. Gratius asked what he should do. Gratius asked for a simple requirement and that was to kill the Beschimer brothers.