C130 Inter- and Exogenous

Jiu You was the King of Assassins of the Blood Slaughter Group, the strongest in the world of assassins. He was also an [S] class expert.

The Blood Slaughter Organization was the largest assassination organization in the underground world. Because it had Tartarus overseeing it, it could be considered an S rank force.

However, in front of a true [S] class power, Blood Slaughter was still far off