Urban Square: Kohaku no Tsuigeki
Genres: Action, Mystery
Type: OVA, Episodes: 1
Aired: Nov 28, 1986
Studio: Network Kouenji Studio
Source: Original
Rating: R - 17+ (violence & profanity)
Synopsis:
Ryou Matsumoto is a screenplay writer that runs into a man and witnesses his murder. Unknown to him, he gets caught up in an illegal antique ring along with a girl he meets named Yuki. In order to survive, he ends up acting out the "action hero" role that he writes in his screenplays.

(Source: ANN)