Reborn as the Waste Lord: SSS-Grade Castle Evolution System

Roen Kast was an architect crushed by his own blueprints—until he woke up in the Crack Void Era, a fractured world of floating islands and ruthless lords. Exiled as a waste by his noble family to the desolate Gray Mist Island, he’s got 72 hours before the rock collapses under his feet. Armed with a crumbling watchtower and a mysterious SSS-Grade Castle Evolution System, Roen vows to turn his exile into an empire. Absorbing island cores to evolve his castle, converting enemies into loyal guards at the cost of his own will, he’ll claw his way up from nothing. With a bug-phobic mercenary, a snarky noblewoman, and a cunning ex-saintess by his side, Roen faces wolves, knights, and a god pulling strings from the void. In a world where power is built brick by brick, he’ll either rise as the Crack Void’s master—or crumble with it.