Kiyoshi joins Koji Shinjo on his trip to Birth Island to join Akira Yuki in getting Godzilla under the control of G-Force. Under the command of Yuki, Kiyoshi and Koji plant tear gas mines to send Godzilla away from the island, giving them a clear shot at the back of his neck. Eventually after the launched beacon to Godzilla fails, Kiyoshi and Koji decide that they must kill Godzilla. After this fails and Godzilla returns to the ocean, Koji and Kiyoshi stay behind with Miki Saegusa to try again. That night, several men invade the camp and kidnap the psychic Miki. They return to Japan to team up with Yuki to rescue her from what has now been identified as the Japanese Mafia. Much later, Kiyoshi and Koji are selected to pilot the M.O.G.U.E.R.A. alongside Yuki. When the machine is defeated by SpaceGodzilla, Kiyoshi and Koji are ejected in an escape pod and he is reunited with the other protagonists.