Kagaku Ninja-tai Gatchaman Episode 4 English Subbed Episode Title:Revenge on the Iron Beast Mechadegon.Episode Description:During the investigation of an incident, Ken visits the Institute for Earthquake Research. Because of an earthquake caused by a mecha, he falls along with the director of the institute, Nakahara, into a crevice in the Earth. Ken transmutes and is saved, but he cannot rescue Nakahara. Ken stands before the director's grave and is attacked by Naomi Nakahara, the director's daughter, who firmly believes he's a member of Galactor. Ken understands her anger at not being able to avenge her father and decides to let her know about his true identity as member of the Science Ninja Team. Consequently, he lets her join the team on its mission...