High Martial: From the Start, I'm a Squad Leader in the Demon Realm's Army

[Spiritual qi revival + transmigration + System + subverting expectations + strong from the start + human and demon storylines] Others who transmigrate to a high-martial world are either chosen ones or prodigies from martial arts clans, blessed with opportunities and riding their way to power. Wang Kun transmigrates and, from the start, becomes a low-ranking squad leader in the demon army, the sworn enemy of humanity. He commands a group of brainless demon soldiers, and the moment he opens his eyes, he is saddled with a deadly mission to join an assault on a human sect. Caught in enemy territory with an identity that would get him killed if exposed, Wang Kun faces human prodigies bent on killing him and demon superiors who see him as expendable. He has nowhere to turn. At this desperate moment, the Demon Realm Conquest System binds itself to him! While others cultivate martial arts in pursuit of immortality, he commands demon soldiers and wages war on every front to earn rewards. While others slay demons and exterminate monsters to win a good name, he kills martial artists to seize their cultivation, occupies territory, and climbs the military ranks, quietly making a fortune. He may be a low-ranking demon squad leader, but he is more ruthless than the demons and stronger than the humans. He plays by his own rules! Wang Kun has no interest in becoming a pillar of righteousness among humans or a submissive lackey of the Demon Realm. Leading his demon army, he carves out a path of his own through the high-martial world. Who cares about the divide between good and evil, or the enmity between humans and demons? Those who follow me prosper; those who oppose me, whether human emperors or demon overlords, will all be crushed!