正气大侠 怪兽大决战

On July 23, 1992, the OVA "Jankenman: Kaijū Daikessen" was released. It is a work of approximately 40 minutes in length, recorded on VHS video. Synopsis: One night, a meteorite suddenly crashes into Janken Village. From an egg attached to that meteorite, the monster Osora hatches. Noticing this, Osodashi Kamen plots to use Osora and the giant mecha Osodashigidora to crush Jankenman and destroy the village.