Elena Fujisawa is a first-year student at Kitakomachi High School and a member of the badminton club, recognizable by her long black hair, brown eyes, and standard school uniform. Her longstanding friendships with Ayano Hanesaki and Noriko Miura began in kindergarten. As Ayano's childhood friend, she consistently cares for and supports her, actively protecting her by keeping figures like Kentarou Tachibana away and encouraging Ayano's involvement in badminton, even devising strategies to ensure her participation in team activities like the training camp.

Initially joining the badminton club as a manager with no prior experience, Elena was motivated by recognizing Ayano's need to reconnect with the sport despite Ayano's reluctance. She later transitioned to an active player role, stepping in during the prefectural team tournament when Nagisa Aragaki was unavailable. Her middle school basketball background provided agility and stamina useful on the badminton court, though she initially struggled with technique. Through teammate guidance, she developed foundational skills, securing a first-round victory against Akazawa Misa in the Inter High Team Preliminaries before subsequent losses.

Elena demonstrates a perceptive and empathetic personality, particularly attuned to Ayano's emotional state and her tendency to withdraw due to unresolved trauma. This insight fuels her commitment to the club, aiming to provide stability for her friend. While generally nurturing and supportive, she exhibits assertiveness when necessary, orchestrating scenarios to ensure Ayano's engagement. Moments of timidity surface but do not diminish her strong will and determination to help. Her unwavering loyalty underpins her actions through various team interactions and challenges.