Episode 1: Gilbert the Sage

Gilbert the Sage (賢者なるギルバー, Kenjanaru girubāto) is the first episode of Time Travel Girl. It aired on July 9, 2016.

Short Summary
Mari Hayase and Waka Mizuki plan on making a cake for their friend, but plans fall apart when Mari opens a mysterious book that sends her flying back in time where she ends up crossing paths with William Gilbert.