Himitsu no Ai-chanAikos Geheimnis; El Secreto de Ai; Secretive Ai-chan; เมื่อสาวห้าวไปเป็นสาวเมด; ヒミツのアイちゃん; 謎樣的愛子; 비밀의 아이

Reo is tomboy Aiko's rival, and Ai strives to beat him in everything - like basketball and popularity - but her efforts always fail with Reo always coming out on top. Then one day, she sees her break come through: her brother offers her a job at his maid cafe! But how will tomboy Ai ever be able to pass off as a cute maid? With a wig and a bit of makeup, this becomes possible. She's so much of a different person, even Reo doesn't recognize her! But things start becoming strange when Reo shows interest in her, asking out "Mai" on a date. Ai agrees, with plans in mind to get him to fall in love with her so she can later dump him. Will Ai finally win over Reo, or will her plan backfire just like her many others?