Without wasting time, he brought out the skill upgrade core and activated it.
[ Select a skill to upgrade: Drain (A), Eclipse Vision (A), Adamant Body (A)… ]
When the option arose to pick a skill he wanted to upgrade, he did not hesitate and chose the new skill he had just obtained.
[ Are you sure you want to upgrade Bloodsteel Physique (A) to Crimson Sovereign Physique (S)
YES / NO ]
"Crimson Sovereign Physique. A cool name as well. Yes."
The upgrade process was immediate, far quicker than the fusion.
[ Crimson Sovereign Physique (S-rank, Passive): Your blood ascends into a sovereign state, permanently reinforcing every cell of your body. All physical damage from attacks below S-rank is massively reduced, while blood circulation reaches a supreme level, allowing instant regeneration of non-fatal injuries and accelerated recovery even from severe wounds. ]
He felt the same ethereal sensation he had experienced when he first obtained the skill.
