Moena Wakakusa serves in the Tokyo Branch of the HxEros organization, defending Earth against Kiseichū alien threats. A high school student, she sports blonde hair in pigtails with ribbons, green eyes, and is typically seen wearing a face mask, reflecting a gyaru style. She shares a past connection with Momoka Momozono from the Saitama Branch, having attended the same middle school. Within the Tokyo Branch, Moena operates as Shiko Murasame's mission partner. Her personality is cheerful and playful, bringing positive energy to the team, coupled with fierce loyalty to her allies during Kiseichū battles. Moena possesses a unique combat ability: absorbing energy released by defeated Kiseichū to temporarily enhance her own strength and speed. This power carries risk, as absorbing excessive energy can overwhelm her system. No significant romantic interest in Retto Enjō has been depicted.