Two centuries ago, a mysterious universal system descended upon Earth, granting individuals aged 21 and older one of four distinct systems: Level-Up, Cultivation, Quest, or Store. However, in a seemingly ordinary apartment, a young man named Orion, who may not be as ordinary as he seems, unexpectedly awakens a Fused system that encompasses all four types. A voice, deep and resonant, echoed in his mind: "Welcome, Orion. You have awakened to the Fused System – an unprecedented convergence of the Level-Up, Cultivation, Store, and Quest systems." This newfound power sets the stage for a journey that could reshape not only his life, but also his city, Earth itself, and perhaps even the entire universe and beyond. As he delves deeper into this extraordinary power, Orion must also unravel the enigma surrounding his family's past, the origins of this mystical system, and the eerie dungeons and small worlds that mysteriously appeared alongside it, harboring untold secrets and unimaginable challenges. Join us as we embark on an epic adventure, seeking answers to these and other mysteries and uncovering the true potential of the Fused system, as well as the untapped potential of the universe itself.