Manabi Hakase is a supporting character in the anime Princession Orchestra. She is a fourteen-year-old genius inventor who runs a video channel called Professor Manabi Invents Channel within the Alicepia network. Her birthday is April 18, her blood type is A, and her constellation is Aries. She is a classmate in the classroom next to Minamo Sorano’s class and is also a friend of Natsu Hinoshita. Manabi is not particularly skilled at singing or dancing, so she compensates for this by inventing a variety of gadgets and devices that can enhance those abilities or assist the princesses in their missions. She consistently strives to create inventions that will be helpful to Alicepia, though the results often turn out in unusual or unexpected ways. Her last name, Hakase, is the Japanese term for a doctoral degree holder, reflecting her role as a youthful professor figure. Among her quirks, she can accurately divide a whole cake into equal thirds just by looking, and her favorite food is a chocolate bar. She is a member of the broadcasting club at school. Her role in the story centers on providing technological support to the main characters, particularly through her inventions that aid the princesses in their battles against the Jammerwocks. Over the course of the series, Manabi’s inventive efforts contribute to the group’s growth, and her friendship with Natsu and Minamo allows her to become a dependable ally in protecting Alicepia.