So since there's apparently no exp that increases levels, stats are what dictate when a person is at a level high enough to evolve. It's slightly similar to the system in Toika/Toy Car's "Stop! Friendly Fire!", where since there's no exp, instead of raising your level to increase your stats, you instead raise your stats to increase your level. I've been wanting someone on Webnovel to take this idea and make another novel based around it. After all, "Blood Warlock: Succubus Partner in the Apocalypse" uses the same leveling system from Toika/Toy Car's "Everyone Else is a Returnee", and the former is one of the most successful novels on the site. Maybe even PancakesWitch could do it.
kinda disappointed ngl, makes all the of the orc tribes sorrow and grief completely irrelevant. It would have been interesting seeing how he manages the tribe filled with the wifes and children of the orcs he killed. I understand that this is a fighting novel but the whole 'just slap a contract and they now slaves' just seemed anticlimactic.