Anime Crossover: Starting with Survival on a Deserted Island

What happens after a transmigrator's System collapses, leaving behind an inheritance for him?

He survives on a mysterious island, explores the limits of martial arts in a wuxia world, and plunders the origins of other worlds in a fantasy realm to raise his own world's standing. He becomes the founder of the Divine Martial Era, and also the greatest mastermind behind the scenes in that world.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.