In the "Dragon Rider" OAV, Karis (alternately called Karisu) is a fetching, fiery blonde village resident encountered by protagonist Rike during his dragon quest. She forms an immediate connection with Rike while living with her aunt. When long-dormant demons attack, her aunt's death escalates the conflict, drawing Rike into the battle and motivating Karis's involvement. Her interactions with Rike grow complicated due to his jealous fiancée, adding interpersonal tension. The conflict expands beyond her village, compelling Rike to return home and prove his worth against external threats and personal rivalries. Karis appears exclusively in this OAV, with her character arc unfolding entirely within its two-episode run.