After he graduated from Keio University, he continued his training in aikido, while working in the family business.
[1] In 1972 Maruyama resigned from the Aikikai to become the chief instructor of the Ki No Kenkyukai which had been founded the previous year, at which time he was granted the rank of 8th Dan by Koichi Tohei.
In the period time he studied the healing arts of Seitei with Haruchika Noguchi, Soutai with Keizo Hashimoto and Reiki.
After his resignation he entered a temple in Saitama Prefecture, where he remained for a period of ten years, eventually leaving in 2001.
Aikido instructors from many countries joined Maruyama's new association and it grew rapidly over the course of the next ten years or so.