Komatsu was involved in organizing the Japan World Exposition in Osaka Prefecture in 1970. In 1984, Komatsu served as a technical consultant for a live concert in Linz, Austria by Japanese electronic composer Isao Tomita. He won the 1985 Nihon SF Taisho Award. Komatsu was one of two Author Guests of Honor at Nippon 2007, the 65th World Science Fiction Convention in 2007 in Yokohama, Japan. This was the first Worldcon to be held in Asia.