Hikari Tachibana is a student at Millennium Science School and a member of the Game Development Department in the mobile game and anime series Blue Archive. Known for her bright personality and enthusiasm for game design, Hikari often acts as the energetic heart of her club. She is passionate about creating fun experiences for others, and her technical skills and creativity help her team tackle various challenges. Hikari plays a supportive, uplifting role, motivating her friends and contributing to the department's unique projects.