Kaichou wa Maid-sama!

Synopsis

Yukimura’s little sister Ruri loves playing make-believe princess but refuses to acknowledge her brother as he does not meet her ideal image of a prince. She meets the "prince-like" Takumi, and Yukimura convinces Takumi to go on a date with his sister in order to gain her favor. Things go as planned (with Takumi wearing a prince costume made by Aoi) until the others fear the "princelier" Takumi may replace Yukimura as Ruri’s big brother. Kanou and Misaki try to interrupt the date, so Ruri runs away, almost causing a cupboard to fall on her. Takumi stops the cupboard whilst Yukimura shields her. Yukimura scolds Ruri when her prideful behavior goes too far, and she apologizes and accepts her big brother. Sometime later, Kanou and Yukimura save Aoi from a group of thugs, but do not recognize him as he is cross-dressing. Aoi decides to enlist them and the Three Idiots to film a PV. Aoi enjoys the crew’s enthusiasm, but tries to deny it when they see Aoi genuinely smile. An escaping thief bumps into Aoi, causing him to drop the camera’s memory card. Aoi tries to catch it and nearly falls doing so, but is saved by Misaki, who was chasing the thief. Despite Aoi's abuses, the crew enjoyed working with 'her' and offer to search for the memory card, which landed below on Takumi by chance.

(Source: Wikipedia)