Ryoubi is a fictional character from the Senran Kagura series, a shinobi girl known for her calm, serious demeanor and strong sense of duty. She is one of the twin sisters of the Hebijo Clandestine Girls' Academy faction, often portrayed as the more composed and responsible sibling. In the story, she serves as a skilled fighter and a key member of her team, balancing loyalty, discipline, and occasional concern for her sister Ryōna. Her role highlights the contrast between stoic strength and emotional vulnerability.