Heaven continued attacking Gravis continually, forcing him to resist its ever-increasingly powerful attacks.
In the beginning, it had been relatively easy for Gravis to survive, but as more time passed, it became harder and harder.
After 100 years, Gravis was close to death, and he would have already died if he hadn't been able to understand several Laws.
Blocking and parrying the elemental attacks was still a possibility with his regeneration of Life Energy, but one of the elements became a massive issue for him.
The level three Law of the Wood Element.
Whenever he blocked this element, Gravis felt an incredible pain shoot throughout his Spirit. This Law attacked his Spirit directly, and Gravis had never been attacked by something like this before.