Summary
An is the thirteen-year-old sister of Kippei Tachibana and attends Fudomine Middle School as a second-year student and regular member of the girls tennis club. Her most noticeable physical features are her pink barrettes, which turn green when she is wearing sports attire. Although she has a somewhat boyish appearance, she confidently wears miniskirts, cute outfits, and dresses to achieve a more feminine look. An is deeply devoted to her brother and her friends from both the Seigaku and Fudomine teams, doing her utmost to assist them. Conversely, she possesses an explosive and even vicious temper. This fierce nature often leads her to get into trouble on behalf of others, as demonstrated with Sakuno and Atobe, or to resort to physical violence, as shown by her interactions with Kirihara.
