Natsuki Inaba was a renowned pianist. At the top of her game, she was performing shows for full crowds and influential people, and being young, she was often called a prodigy. With youth, beauty, fame, and fortune, people think Natsuki has it all. However, that's not the case. Growing up as a prodigy, Natsuki's parents are controlling. From the music she plays to the people she hangs out with, they must all be approved. So when she finally convinces them to let her attend Shujin Academy for the year, Natsuki finally feels like she has breathing room. There she meets an unusual trio and a monster cat who introduces her to the Metaverse. With her own parents being driven by greed will Natsuki has to fight for her freedom, becoming a Phantom Theif herself, and steal her family's treasure. And along the way, she begins to have feelings for a certain boy, wondering if she'll have the courage to confront them or simply run away like a coward. The story is mainly based on Persona 5 Royal and a bit of the animation.