Time Travel Shoujo: Mari Waka to 8-nin no Kagakusha-tachi

Mari treasures the pendant given to her by her scientist father, who vanished three years ago. Finding a familiar book about electricity and magnetism unexpectedly sends her into the past, where she encounters scientists whose discoveries will transform everyday life.

With help from her friend Waka and Waka's brother Shun, Mari follows traces of her father through experiments and inventions across history. A businessman is searching for him too, tying these extraordinary meetings to the unresolved mystery surrounding his research and disappearance.