Toshihide Tonesaku

Tokyo Babylon/1999 is a psychological thriller live-action film based on the series. It takes place five years after the end of the manga and its plot is based on the Tokyo Babylon story "Call.A" in volume 3. Director George Iida requested the help from the OVA producer Yumiko Masujima in casting the main characters. The film is famous for being the first live-action production based on a Clamp series and Iida expressed satisfaction in response to positive fanresponse. (Wikipedia)

Tantei Gakuen Q revolves around a team of genius students studying in a detective academy run by a famous detective, Morihiko Dan. (kissasian.com)

Three murder cases take place in Tokyo. Numbers are left at the murder scenes, possibly hinting at where the next murder will take place. An investigation begins of the serial killer and Detective Kosuke Nitta works on the case. He believes the next murder will take place at Hotel Koruteshia Tokyo. To catch the killer, Kosuke Nitta goes undercover and begins working at the front desk of the hotel. Naomi Yamagishi works at the front desk of Hotel Koruteshia Tokyo... (imdb)