Dominique once dreamed of becoming the unbeatable final boss, only to discover he has reincarnated into a world already built around a protagonist whose misunderstandings keep reshaping reality. Rather than compete for the top spot, he decides to become the perfect second-in-command, the terrifyingly capable right hand who makes the protagonist look even greater. The trouble is that every attempt to play the cool supporting role only makes Dominique more indispensable, more feared, and far busier than he ever intended.