The function of this Soul Skill was just as inconspicuous as its name: simple and straightforward. It simply hardened the sea soul beast's body for a period of time, and once the time was up, the state automatically wore off.
Normally, if a Soul Master killed a soul beast and failed to acquire a high-tier Soul Skill, instead absorbing a useless skill like Hardening, they would surely curse for three days straight.
Yet at this very moment, for Huo Yuhao, this Soul Skill was far more dangerous than any terrifying attack!
Chapter 815