I suggest watching episode one to get the voice on point, here's the link for the subbed version: https://www7.kickassanime.io/anime/citrus/episode-01

Information: Mei Aihara (藍原(あいはら) 芽衣(めい), Aihara Mei) is one of the main characters in the manga Citrus. She is the Student Council president and the younger stepsister of Yuzu Aihara.

On her exterior, Mei appears to have a cold and ruthless attitude towards her peers. She's obtained a stern and short-tempered personality from her father abandoning 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 how she acts, on the inside she is sensitive, lonely and hides a heart that can be easily hurt. Her usually hard personality contrasts with her emotional side, which manifests often. Mei struggles to understand Yuzu's optimistic nature, as it harshly mirrors her pessimistic one. As the series progresses she slowly changes being less cold to Yuzu and a little bit more caring towards her. Although she still has a hard time being honest and understand on what she's feeling. She sometimes does childish things, and likes teddy bears. She's more confident than Yuzu knowing the fact that not everyone will approve of their relationship.