Mental Diver

A girl named Manami Sendo falls into a deep coma after being attacked by a psycho diver. To rescue her, Professor Ogashira from the World Brain Foundation recruits a young psycho diver named Akira Nekuta to enter her mind. Inside, they encounter a hostile psycho diver known as Nekomu. During the confrontation, Akira and Manami's consciousnesses merge, forming a new entity named Anima Animus. After defeating Nekomu, Anima Animus becomes a key figure in the World Brain Foundation, tasked with battling the secret organization Nightmare.