Returning to the mansion after meeting Mira, Azrael made his way straight to the bathroom.
He filled the bathtub with warm water and took out around fifteen different kinds of materials from his inventory.
There were blocks of various metals, herbs, a bottle of potion, and even a few rocks brimming with energy.
These were the items required to practice the Unyielding Body.
Oliver had delivered them the very next day after Azrael had embedded his substance.
Unlike ordinary defensive skills, the Unyielding Body was more like a body-refining art that directly strengthened the physical body itself.
To cultivate this skill, the user had to absorb the energies of specific materials and channel them into the body in the precise way described in the technique, thereby tempering the body.
However, this process was anything but easy.
There were two main reasons why the receptionist at the skill library had advised Azrael to choose another skill instead of the Unyielding Body.
