Overview:Morning Musume.'s Ishikawa Rika's Graduation Concert held at Nippon Budokan. Morning Musume. is a Japanese idol girl group part of Hello! Project, produced by Tsunku. "Dai 6 Kan Hit Mankai!" features a concert from their 2005 spring tour. It was filmed May 7 at Nippon Budokan and was also the graduation concert for 4th generation member Ishikawa Rika.