You think you're living a quiet life in the countryside. Then, one day, a dragon shows up, and everything changes—not because of the fire-breathing serpent, but because of Haga, the man who shows up and "debugs" the situation. Can it be that your life is nothing like what you thought? And what, exactly, is "QA?" A thrilling isekai action fantasy from a fresh, new perspective! Debugging the Disastrous Dungeon After the destruction of his home by the troupe of immature and impervious debuggers, Amano joins Haga and Nikola's party to journey across this incomplete, buggy world so they can bring down the cruel debugger boss. Following Tesla's wish to rid the game of the irresponsible debuggers, the group infiltrates the boss's castle to steal his stone tablet. Unfortunately, they run into bug afte rbug as they progress through the dungeon. What awaits their party of three and what new truths will they find along the way?