System Universe

System Change (System Universe #1) by SunriseCV is a science fiction fantasy novel set in a post-apocalyptic Earth transformed by the arrival of the System and hostile Invaders. The story follows Derek, a solitary survivor who has adapted to the new world by relying solely on himself and honing his combat skills against mutated creatures and alien forces. His isolated existence is disrupted when he chooses to assist with a seemingly simple mission, challenging his long-held belief in solitude. The narrative explores themes of survival, adaptation, and the complexities of trust in a dangerous, changed environment.

Torith by SunriseCV follows Derek, a seasoned System Traveler who finally lands in a new world after decades of isolation in the void. Armed with a game-like interface, he confronts dungeon overflows, dangerous monsters, and the harsh realities of a post-apocalyptic landscape where survival depends on rapid growth and tactical choices. Alongside an unusual soulbound “murder bunny” with culinary ambitions and other emerging companions, Derek navigates magic, war, and escalating threats that test both his power progression and his long-dormant need for connection. Blending LitRPG structure with progression fantasy and science fiction elements, the story emphasizes action, system mechanics, and the cost of enduring in a broken world.

Savannah by SunriseCV continues Derek’s progression in a dangerous LitRPG-style world as he and his companions arrive in the commercial hub of the Cydarian Kingdom. After an unexpectedly honorable encounter with House Gracefall and a more predictably corrupt noble family, Derek’s view of power, politics, and status remains unsettled. In this new city, he navigates shifting alliances, hidden agendas, and the risks of tying his growing strength to influential houses, while Silvi’s enthusiasm for cooking begins to shape her own path. Blending fantasy adventure, post-apocalyptic elements, and game-like progression, the story focuses on survival, reputation, and the costs of power in a kingdom on edge.

Trials of Cydaria by SunriseCV continues Derek’s progression in a post-apocalyptic, system-governed world where magic, monsters, and politics intersect. After helping expose and neutralize Gerald Torith’s internal threat to the Kingdom of Cydaria, Derek settles in the city of Savannah, establishing a shop, securing a proper kitchen for Silvi, and forging ties with City Lord Natalie Savannah. His encounter with the powerful Alanah Swan reveals deeper layers of the System that controls this LitRPG universe, hinting at challenges beyond simple survival. Although Derek hopes to focus on the upcoming auction and his newly claimed home, royal interests and looming conflicts suggest that his brief respite will give way to new trials and large-scale consequences.

System Interference by SunriseCV continues Derek’s progression in a post-apocalyptic, game-like world where magic, monsters, and survival are governed by the Great System. With his loved ones secure in Savannah, Derek joins Prince Edgar and Cydaria’s elite to confront a newly emerged level 250 raid dungeon that threatens the kingdom if left unchecked. Inside, they discover a rare trial dungeon operating under time dilation, forcing the party to navigate shifting challenges while Derek undertakes a critical Class Upgrade. When the Great System unexpectedly requests outside assistance, the story expands its LitRPG framework with questions of overlapping systems, uncertain alliances, and the consequences of power in an apocalyptic fantasy setting.

Indaria by SunriseCV continues Derek’s progression in a dangerous System-governed world where dungeons, war, and survival are everyday concerns. After Prince Edgar abruptly abandons the raid, Derek assumes harsh command to push the remaining party through the Raid Dungeon, securing victory at a steep personal cost. His and Silvi’s subsequent abduction by a mysterious, system-defying elf named Dave exposes unsettling truths about the nature of power and interference in this post-apocalyptic fantasy setting. Returning to Savannah with new knowledge and unresolved questions about Cydaria, Derek must balance his overwhelming strength, his enduring bond with Silvi, and his reluctant responsibilities in a universe shaped by magic, monsters, and game-like rules.

Requirements by SunriseCV continues Derek Hunt’s story in the aftermath of a brutal continental war, as rare peace settles over Cydaria. Having cleared overflowing dungeons, helped capture a notorious noble, and turned the tide against Astrus and Indria alongside Silvi, Derek finally has the freedom to decide his own path. The novel shifts from large-scale conflict to more introspective progression, as Derek weighs rest, deeper exploration of the System Universe, and long-delayed promises to allies. Blending LitRPG mechanics, isekai elements, and slice-of-life interludes within a post-apocalyptic fantasy world, this seventh installment focuses on growth, relationships, and the responsibilities that remain even when the battlefield falls silent.

System Clash by SunriseCV continues Derek’s progression in a post-apocalyptic, game-like world where magic, monsters, and war shape everyday survival. With Cydaria stabilized and his allies safer than before, Derek turns his attention to repaying a crucial favor owed to Dave, even as Alanah’s recent ascension leaves a lingering promise to find her again. This eighth installment in the System Universe blends LitRPG mechanics, isekai-style displacement, and quieter slice-of-life moments with high-stakes action, as Derek balances personal bonds, hard-won territory, and looming systemic threats. Readers can expect steady character growth, methodical power progression, and a focus on how an overpowered protagonist manages responsibility in a fragile world.