System Universe Books in Order

Derek has survived Earth's violent System Integration by relying on his own growing strength. When he reluctantly helps with a seemingly manageable mission, he is thrown into another world, where unfamiliar rules and unexpected companions challenge his solitary habits.

Derek and his companions leave a mixed experience with Torith's noble families behind and enter Savannah, Cydaria's commercial capital. New allies and business opportunities beckon as he searches for a place that might finally feel like home.

After rescuing a region from a dungeon overflow, Derek travels to Torith with new companions and an ambitious cooking rabbit. Entering his first city means confronting powerful nobles and discovering whether his suspicions about them are justified.

Derek has begun building a home and a business in Savannah, with his companions finally enjoying some security. An anticipated auction promises fresh rewards, but a prince's request may draw him away from peace and into another dangerous undertaking.

After a difficult raid ends, Derek and Silvi encounter a powerful elf with unexpected insights into the systems governing their lives. Returning toward Savannah, they must discover what happened while they were away and whether Cydaria needs their help.

With war over and his companions finally safe, Derek Hunt faces an unfamiliar freedom: choosing what to do next. Promises still need keeping, and unanswered questions about the System Universe offer possibilities beyond another fight for survival.

Derek joins Prince Edgar's effort to clear a dangerous raid dungeon, only to discover trials governed by distorted time. When a class upgrade draws another system's attention, uncertainty over its intentions adds a new complication to the expedition.

After helping secure Cydaria and accompanying Alanah through painful memories on another continent, Derek faces a promise still unpaid. Dave's requested favor becomes the next step in a journey increasingly shaped by powerful beings and competing systems.

After helping one system defeat another, Derek and his companions prepare to claim their rewards. With ascension approaching, the once-solitary adventurer must make irreversible choices about the bonds he has formed and the unfamiliar future awaiting them.