Haruka Akane works part-time at her parents' driving range, where she first meets Minami Aoba and introduces her to golf. As a high school senior with exceptional golf skills honed in international amateur competitions, she stands as the most proficient player within the main trio, naturally guiding beginners like Minami. Her personality is naturally cheerful and straightforward, making her approachable, though she keeps her personal history largely private. Golf remains her absolute priority; she cherishes every aspect of the sport, from its inherent frustrations to the exhilaration of a perfect shot, emphasizing that its appeal lies not just in competition but in the holistic experience.

Her mentoring focuses squarely on fundamental techniques over equipment, advising Minami that form matters more than fancy gear for improvement. She maintains close relationships, sharing a comfortable and authentic dynamic with Ayaka Hoshimi and interacting easily with the elderly regulars at the range, reflecting her deep integration into the golf community. Physically, her athletic build is noted, particularly her thicker thighs reflecting an active lifestyle. Beyond instruction, Haruka actively immerses Minami in golf, inviting her to play on a course and providing used clubs, all while cultivating a supportive space that encourages enjoying the sport despite its challenges.