In 2015, General Incorporated Association PLANET TERRA, was established as the personal office of composer and arranger Tamiya Terashima. Led by its current representative director, Takeru Terashima, the organization expanded its activities by founding the Planet Terra Youth Orchestra, bringing together music students from the Tokyo metropolitan area. In 2023, with the addition of three new board members, the organization embarked on a fresh start, focusing on orchestra-centered projects as its core initiative.