Otohime is a dragon who appears as a supporting character in the anime, the original video animation, and the manga of Dragonaut - The Resonance. She is the dragon partner of Itsuki Habaragi, and her appearance is closely modeled on Itsuki: the two look almost identical, with the only visible differences being the color of their hair, their clothing, and the markings that sit beneath Itsuki's eyes. This striking resemblance ties Otohime directly to Itsuki and shapes her presence in the story. Her connection to the Habaragi family is also reflected in her relationship with Yuuya Habaragi, who addresses both Itsuki and Otohime as "nee-san," the Japanese term for older sister, treating the pair as older-sister figures. Within the narrative, Otohime's role is defined by her partnership with Itsuki, and she appears alongside her partner throughout the main series, the bonus episode, and the manga adaptation.