Sanpou Shoujo

算法少女

An adaptation of a children's novel of the same name published in 1973. Endo Hiroko is the author, who was inspired to write the story from a tale her father told her as a child. It follows a 13 year old girl named Aki. During a pilgrimage to Sensou-ji (a Buddhist temple located in Asakusa, Tokyo), she found a mistake in the sangaku. News spread quickly of her intellect and eventually landed upon...