Matantei Loki Ragnarok

Mayura's father thinks that all of the mystery junk she always talked about is useless and is bad for her. He wants her to stop going on detective adventures. To help her solve her problems between Mayura and her dad, Loki used his powers to bring them both back to their memories of 10 years ago. As their memories revealed that her dad told her that he was a "detective" when she was younger, Mayura remembered it was because of him that she loved mysteries which led to an understand at the end.