Mei Aihara (藍原あいはら 芽衣めい Aihara Mei?) is the deuteragonist of the manga Citrus. She is the Student Council president, the daughter of Shō Aihara, the stepdaughter of Ume Aihara and the younger stepsister/wife of Yuzu Aihara. On the outside, Mei appears to have a cold and ruthless attitude towards her peers. She's obtained a stern and short-tempered personality from her father's abandonment of her. She is unable to communicate with Yuzu normally and struggles to convey her feelings properly, this results in her often making frequent sexual advances towards Yuzu. Despite her behavior, on the inside, she is sensitive, lonely, and hides a heart that can be easily hurt. Her usually hard personality contrasts her emotional side, which manifests often. Mei struggles to understand Yuzu's optimistic and impulsive nature, as it harshly mirrors her pessimistic and measured one. As the series progresses, she slowly changes, becoming less-cold to Yuzu, and a bit more caring towards her. She still has a hard time being honest and understanding what she's feeling. She sometimes does childish things[3] [4] and likes teddy bears. She's more confident than Yuzu knowing the fact that not everyone will approve of their relationship. After dating Yuzu then later being engaged to her, Mei start to open up more being gentle and warm, while still keeping her calm and strict demeanor.