He lists astronomy as one of his hobbies, and clearly enjoys stargazing.
Together with vocalist Sachiko, he most recently performed "Jewel in the Winter Sky" at Tokyo's Sunshine City Planetarium.
In addition to astronomy -- Aquamarine albums sport titles like "Tales of Stars" and "Cosmos" -- the band's interests include the Backstreet Boys and "Doraemon", an animated TV show similar to America's Rugrats.
Many Japanese people have been enraptured by the Leonids display in recent years. In 1998, about 4 million Japanese fled the cities to the mountains and seacoast to watch the display, causing traffic jams throughout the country.
Leonids '99 is a global educational project designed to teach high school students about the annual celestial event by organizing observation activities. Sponsors of the project include the Society for Teaching and Popularization of Astronomy, the Astronomical Society of Japan and the Japanese Society for Planetary Sciences.