Hoshi is a full-time 25-year-old office worker who suffered from an unexpected death. Regretting what he had done and what happened in his life, a Goddess heard his wish and gave him a new life, but in exchange, he must be a hero. Reincarnated in another world as an adventurer, what will happen to him? Is Hoshi will overcome his mistakes? And what a deep secret that world has? Could it be a random reincarnation world or a world for the unknown?