Sirius is one of the best special agents that his generation has ever seen, but he gets KIA in an effort to save his colleagues. Fortunately for him, he gets reincarnated after his death, and now he’s a young boy in a completely different world! 
One of Sirius’ unfulfilled tasks in his previous life was to pass on his knowledge and experience to a student, someone who could continue his legacy. Still wanting to fulfill this dream of his, he sets out to meet those who he will deem as pupils in this new world he’s been reincarnated into! 
And thus the story of Sirius, the best special agent that has ever lived, and his quest to become someone else’s mentor and role model begins! 
“If you have nothing to lose, follow me! I will teach you how to live in this world!”
 
(Source: Tentai Books)

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