Magne Robo Gakeen is a tV series anime that premiered in fall 1976.

About the production: the story comes from an original script, there are 39 episodes of about 24 minutes and its current status is "finished".

Its main genres are mecha and sci-fi, with themes such as Battle Royale and Succubus.

On AniList, Magne Robo Gakeen has an average score of 61%, an average score, and appears on 732 users' lists.

Dr. Kazuki, who perceived of an invasion of Earth by the Izaru people builds a robot based on the science of magnetism and sphere joint theory. Undergoing a dangerous augmentation process, Dr. Kazuki's daughter Mai becomes the pilot of "Mighty" or "Magnetman Minus". Takeshi Hojo becomes the pilot of "Puraiza" or "Magnetman Plus". The pilots would hold each other and then physically trasform their joint bodies in a metallic plate locking itself on the Gakeen (Short for "Gathering Keen") robot's frame thus enabling the super robot to move and fight. This sequence was notable, to an adult's eye, for its almost-sexual connotation. (Source: Wikipedia)

Official synopsis from AniList.