The film will revolve around a mystery that happens on the day of the Justice Day festival that celebrates Sternbild's legendary goddess. (Source: ANN)

Burning with ambitions to become the most beautiful woman, the most renowned scientist, and the greatest hero the world has ever known, three villains, Atasha, Sekobitchi and Duwarusuki, unite. The trio are Time Patrollers, the keepers and protectors of the annals of history. But, this is only a cover for the trio, as the villains are league with a nefarious leader, who is trying to alter the course of history to suit his desires, and, under his instructions, the trio travel in time with the aim of tampering with recorded history. Only Hikaru and Nana, disguised as the Otasukemen, stand between the villains and their goals. (Source: Wikipedia)

A laugh-out-loud hilarious adventure from the studio behind Gatchaman and Speed Racer! Who has what it takes to be the baddest of the bad? It's evil versus evil as teams of bad guys compete to be the meanest villains ever! Watch and laugh as the Dorombo Gang and their Kitchen Robot take on the worst of the worst in a wacky race to be the greatest villains in anime history! The only force that stands in their way are the superheroes of anime. Will the Gatchaman ninja arrive in time to save the day? (Source: AniDB)

Time Travel Shoujo is based on a 1983 book titled Jishaku to Denki no Hatsumei Hakken Monogatari by Japanese educator Kiyonobu Itakura. It is part of the Hatsumei Hakken Monogatari Zenshuu series which describes the story of various scientific discoveries and inventions throughout history. The 1983 book focuses on discoveries related to magnetism and electricity.