Ryokunohara Labyrinth: Sparkling Phantom (緑野原迷宮 〜Sparkling Phantom〜 Ryokunohara Rabirinsu: Supākuringu Fantomu lit. Labyrinth Green Field: Sparkling Phantom) is a Japanese OVA released on March 25 1990 by AIC and Victor Entertainment and directed by Narumi Kakinouchi.