When Cassian dies unexpectedly, he's reincarnated into a world of magic, monsters, and nobles as the youngest heir of the legendary Vanderbilt family: the wealthiest family on the continent. Even better, he awakens with a unique gift: an AI assistant capable of giving him access to the knowledge of an entire modern civilization. Cassian never wanted adventure. So while everyone else pursues magical power, he has a different goal: make life comfortable. But as Cassian’s creations spread across kingdoms, merchants, nobles, mages, and rulers take notice of the mysterious genius changing the world. Businesses rise, fortunes are made, and entire economies and nations are transformed. With this fame come rivals, political intrigue, inheritance wars, and powerful forces eager to claim his brilliance for themselves. In a world ruled by magic, one young inventor may prove that knowledge is the greatest power of all.