2 years after MC disappeared, MC's letter that he left inside a temple that he remembered is still standing in the present day was found and studied by the government, shocking everyone with mention of things like telling his father to destroy his computer and throw away his waifu collections secretly(which is a concept that shouldn't have existed at that time period) and him travelling back in time. His letter and then his computer was then thoroughly investigated by the government because of the evidence of actual time travel with the result vriadcasted publicly, and now his friends and family, as well as people around the world know he, the great strategist of Oda Nobunaga, was an closet otaku