Kôji Tanaka

In a near future, mankind has moved from a drained Earth to the Moon. Rebel acts of terrorism lead to conflicts with the Earth Federal Government. A mysterious entity called Dallos appears to restore hope. It is widely considered the first OVA ever released. (Wikipedia)

Yui is recruited as a student detective working for Seishonen Chian Kyoku (Youth Law Enforcement Division) headed by Kurando Sekine. But she couldn't agree with the violent method used by the division, and resigns after letting go the students who were being persecuted by them. Kurayami Shirei assigns Yoda to investigate Sekine. Yoda succeeds in obtaining a disk that contains the incriminating evidence but during his attempt to deliver the disk to the Kazama sisters, is fatally wounded... (imdb)