
Arriving in a fantasy Otherworld, Gauss obtains an Adventurer's Handbook that grows stronger the more monsters he slays and collects. Gauss originally thought he was embarking on a classic adventure to defeat the Giant Dragon, kill the Devil, and save the kingdom. Yet, seeing goblins breeding like pests and multiplying endlessly, along with the fast-growing kill count and rewards in the Monster Atlas, his face grows increasingly helpless... "You have slain 1000 goblins! Intelligence +1, Strength +1, Constitution +1." "The title 'Goblin Slayer' has upgraded to 'Goblin Expert'. You are an expert on goblins; few know better than you how to kill them." "..." "The title 'Goblin Expert' has upgraded to 'Goblin Star Destruction'. "

He read the blasted book once, and now, he's in it?! Elias Quinn never cared for his sister’s obsession with that mafia romance novel. He skimmed it once, remembered a few dramatic plot twists, and moved on with his life. Until he wakes up in the story as a background character. He’s not the 'fated' Omega. He’s not even important. So why is the ruthless Mafia Alpha suddenly obsessed with him? The plot’s gone off the rails. So has the Alpha.