I Upgrade Alone in the Dark

Thirty years ago, a space fusion occurred all over the world, opening a portal to the alien wilderness, allowing a primitive demonized species called the wild beast to enter the world, causing incalculable disasters. It wasn't until three years later that a hunter named the Demon Hunter appeared, bringing temporary peace to the world. As for Haoyu Cheng, who lost his family and became an orphan after the disaster, he survived as a poacher after escaping from the orphanage. Until his closest sister stabbed a dagger into his abdomen, an unknown system was finally activated... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.