2001 SP Drama starring Miyazaki Aoi, Oguri Shun, Yu Aoi, and Konishi Manami.

Synopsis: Uchiyama Kaede (Miyazaki Aoi) and Shiina Kasumi (Aoi Yuu) used to be best friends. Now in high school, Kasumi grew more popular than Kaede, which has led her to continually bully her ex-best friend.

One day after school, Kaede meets Kishida Takumi (Oguri Shun), a bike thief who's especially talented in picking locks. She asks him for a favour: if he could possibly open the key to the school roof. Meanwhile, the arrival of a new teacher (Konishi Manami) seems to bring changes to the school.

NOTE: I'll try to add the subtitles in later.