C517 Killing Martial Emperors

The Nether King Slash was the strongest technique in the Hades Religion, belonging to the Heaven Rank. Once one mastered it, they would be able to emit sounds that came from the depths of hell.

As for the middle-aged assassin, he was at the late stage of Martial Monarch Stage, so he was able to train this technique to the maximum. As a result, when the Long Sword came out