The last problem that disturbed the True Will was one that only involved him. It was his cultivation limit.
If the True Name followed his usual trend, the star sealed in the right eye would be a Peak Tier 12, meaning that they would have to face a Star Consciousness with a soul force at Limit Rank 7.
He still had some room for improvement, but unlike the True Soul and True Doomsday Body, he did not depend on spiritual or bodily talent to improve his cultivation.
Zatiel's willpower needed to evolve and find a concept of reality that embodied his individuality. That was impossible since the Neo-Demon had been sleeping since his samsara reincarnation.
Therefore, the True Will could not enter the Sun Collapser Rank. Even if he did his best and pushed himself to the absolute limit, his spiritual strength would not reach the Rudimentary Form Stage.