Tempest Branch Alliance, Tower of Seclusion.
After finishing his grind that needed the Ruler skills to be at X-grade Mortal, he was able to raise his Ruler Rank, becoming an Assistant Ruler of the Void. After he obtained the title, he felt a definite change in his power. He definitely wanted to check his stats right now, but he thought that it was better to grind all of his skills first before checking his stats.
And so, that's what he did.
The first batch of skills he focused on were the Flux skills he obtained from evolving to S-grade Inanimate. Namely, the Flux equipment creation skills, the enchantment skill, the sacrifice skill, and the storage skill for Flux. Although the latter was now obsolete due to [Stick-Flux Unification], a little still went a long way.
Thanks to the Transcending Comprehension Leaf, it only took him 3 hours to raise all of these Flux-based skills, which were at B-grade Mortal, to his current goal, which was C-grade Transcendent level.