Considered a top-tier special agent in his time, Sirius sacrifices himself to protect his comrades but is granted a second chance through reincarnation. Reborn as a young boy in a foreign realm, Sirius harbors a lingering desire to pass down his expertise to a worthy successor. Determined to realize this aspiration, he embarks on a journey to identify and guide promising individuals in his new reality. Thus unfolds the tale of Sirius, a legendary agent, as he endeavors to shape the next generation under his tutelage: 'Join me if you dare risk it all, and I shall impart the wisdom needed to navigate this unfamiliar world!'