Harumi Shinjyu is a key character in the multimedia project and rhythm game Tokyo 7th Sisters. As a member of the idol group 777☆SISTERS, Harumi is known for her calm and mature demeanor, often acting as a guiding figure for her fellow idols. Her reliable nature and level-headedness make her a source of support within the group. Throughout the series, Harumi's dedication to her friends and her personal growth contribute significantly to the team's unity and overall story progression.