Takao Tsushimi (都志見 隆夫 Tsushimi Takao), well known as Takashi Tsushimi (都志見 隆 Tsushimi Takashi) is a Japanese singer mainly known for his singing of the opening and ending theme of Ninja Sentai Kakuranger. He performed under the name "Tou Chi Chen", which is the Japanese approximation of his surname as read in Mandarin Chinese: Dū Zhì Jiàn.