This is where you end

Damon's mana core simply couldn't handle the pressure anymore. First, small cracks started appearing, and then the cracks quickly started to become bigger. The core became more and more unstable.

Damon gritted his teeth. Pain exploded from his mana core, and his entire body twitched with unimaginable agony. But if he stopped now, then… he might once again lose everything. He couldn't bring himself to do that, knowing what was at stake.

Besides, something inside him was urging him to keep going, to take more, to drink more. His body could take it. His blood could take it. He needed to be forged by mana, and this was his only chance! 

Damon bore the pain and stubbornly persisted, absorbing even more mana.