Numbered Nirvana.
The seven minor realms before this depend on one's "foundation," but Numbered Nirvana is a matter of luck—something you're born with.
Azure Star was only a mid-tier civilization, so its descriptions of Numbered Nirvana were vague, mentioned only in passing phrases. However, Shi Ming knew that due to the "exclusivity" of Nirvana skills, each Nirvana Powerhouse could possess a maximum of two—one self-generated and one inherited. Nirvana skills naturally varied in strength. The fewer syllables in their name, the stronger they were, and a single-ID skill was the one-in-ten-thousand "Numbered Nirvana Skill."
A few months ago, throughout the Vast Star Sea and its countless Cosmic Countries, only 38 Nirvana Powerhouses possessed a "Numbered Nirvana" skill. They were the luckiest of the lucky, born with a head start.
