F rank, E rank, D rank, C rank, B rank, A rank, S rank, and the Demi-God rank.
The letters made humanity's power system appear simple, but every rank contained a range of Levels beneath it.
A person's Level showed how far they had progressed through the System. Their Rank showed the level of power the System believed they could display after considering everything they possessed.
That included their Blessing, Aether reserves, body, skills, artifacts, combat experience, titles, and achievements.
Most newly awakened humans began at Level One, although rare individuals who received extraordinary Blessings could begin slightly higher after their first evaluation.
F rank covered Levels One to Ten (Level 1-10).
Humans within that range were comparable to Lesser Demons with Flickering Hearts. A trained F-rank could kill an ordinary Lesser Demon, but a powerful bloodline, unusual affinity, or dangerous artifact could easily overturn the expected result.
