From MC's Perspective:
The Ancient Will is monitoring the whole process. Zack Lockwood's physique underwent many transformative processes. The golden blood was like never-ending energy.
It's strengthening the body, mind, and soul.
The next morning,
The Ancient Will checks Zack Lockwood's physique. It feels that Zack Lockwood's physique is now ready to accept Stage 1 of the Inheritance, which is Black Mark Rank.
The Ancient Will has decided to unlock further stages when Zack Lockwood breaks through to reach the next rank.
Zack Lockwood's body, mind, and soul need to be stronger to accept further stages. So the golden blood is going to assist him when he attempts the breakthrough.
Boom!
The next second, a golden shield rune shot from the golden blood. The golden shield entered Zack Lockwood's mind.
The next second, the golden blood disappeared deep into the body. It won't appear until the next breakthrough.
