Time Travel Girl: Mari, Waka, and the Eight Scientists (タイムトラベル少女～マリ・ワカと8人の科学者たち～, Taimu Toraberu Shōjo: Mari Waka to Hachi-nin no Kagakusha-tachi) is an educational anime television series directed by Osamu Yamasaki and produced by WAO World.
Later it was confirmed that Crunchyroll added the series alongside Three Leaves, Three Colors and Omamori Himari on their catalog since December 21, 2016.
One day, after coming across a mysterious book, the compass glows and sends Mari back in time.
Supported by her best friend Waka Mizuki and Waka's brother Shun, Mari travels through time in search of her missing father and along the way meets prominent scientists who changed the way people think about magnets & electricity.
A 12 episode[3] anime television series aired between July 9, 2016 and September 24, 2016 on TV Tokyo.