Nova is a pivotal character in the anime and manga series Magic Knight Rayearth. She is introduced in the second season as a mysterious girl who possesses magical powers and a deep connection to Hikaru Shidou, one of the main protagonists. Nova is actually a manifestation of Hikaru's inner pain and struggles, acting as both an antagonist and a tragic figure. Her complex relationship with Hikaru brings emotional depth to the story, exploring themes of identity, self-acceptance, and redemption.