Otome wa Boku ni Koishiteru: Futari no Elder The Animation
Japanese title: 乙女はお姉さまに恋してる ～2人のエルダー～ THE ANIMATION
Type: OVA
Episodes: 3
Source: Visual novel
Genres: Drama, Romance
Studios: SILVER LINK.
Duration: 25 min per ep
Rating: PG-13 - Teens 13 or older

Two years after Mizuho's graduation... Mikado Chihaya was truant at his school because of harassment in the school and of a distrust in men. His mother cannot bear to watch him be in trouble, so she makes him transfer to Seiou Girls' School, her old school. He dresses as a girl and introduces himself as Kisakinomiya Chihaya. Chihaya meets Nanahara Kaoruko, who once rescued him from a playboy, and he begins to live in the dormitory building. He becomes the focus of public attention due to his attractive face and figure, and due to high grades at studies.

(Source: Wikipedia)