Dreaming of the Meridian Arc

In the present day the local government of Katori City is in the process of sponsoring a taiga drama about its famous historical figure Tadataka Ino who is known for being the first person to make a map of Japan in 1821 During the process of of making the drama series a surprising fact is discovered about the first map That fact is that Tadataka Ino was not the person who made the first Japanese map