Masato Shimon (子門 真人,Shimon Masato, January 4, 1944–) is a Japanese vocalist from Meguro, Tokyo. He is most known for his contributions to the theme songs of various anime and tokusatsu series. In his career, he has sung under the names Kouichi Fuji (藤 浩一 ,Fuji Kōichi?), Akira Tani (谷 あきら ,Tani Akira?), and Ryū Kisami (希砂未 竜 ,Kisami Ryū?). “Masato Shimon” is also his recording name, as he was born with the name Masaharu Fujikawa (藤川 正治 ,Fujikawa Masaharu?). He recorded a song “Oyoge! Taiyaki-kun” (1975) with only 50,000 yen, but the single sold 4,547,620 copies and became the best-selling single in Japan. It is also listed in the Guinness World Records.
Masato Shimon on TV performing his hit single “Oyoge! Taiyaki-kun”