The Slaves I Banished Returned Stronger

I transmigrated into the disgraced, illegitimate youngest son of a slave-trading family—a villain brutally murdered after tormenting the broken heroines of a dark, despair-ridden novel. My goal is simple: pamper and placate the very slaves fated to kill me in the future, then cast them all out before they grow strong enough to claim their revenge. *(Mature content begins in Season 2.)*