Nana Chigusa is the female protagonist in Nana to Kaoru. A third-year student in high school, Nana is part of the track team and vice president of the Student Council. Additionally, she is very popular at her high school, well-known for her hard-working demeanor and serious conviction towards her educational future. However, when she is handed a bag of Kaoru's toys by his mother to punish him, she inadvertently locks herself into the leather outfit therein. This initiates the first of numerous 'breathers,' intended to relieve Nana's stress that originates from her attempts to keep her name and grades perfect.