Kenji Ohtsuki (大槻 ケンヂ, 大槻 賢二 Ōtsuki Kenji?, born February 6, 1966 in Nakano, Tokyo) is a Japanese rock musician and Seiun Award-winning writer. His musical career began in the late 1970s. He is the vocalist of Kinniku Shōjo Tai, Tokusatsu, Underground Searchlie and Karate Bakabon. The lyrics of a Kinniku Shōjo Tai's song "Doko e demo Ikeru Kitte" affected the character design of Rei Ayanami, from the popular anime series Neon Genesis Evangelion. He's also performed the theme songs to several anime, including Welcome to the N.H.K., Hellsing and Sayonara Zetsubou Sensei.
In primary school, Ootsuki and classmate Yūichirō Uchida wanted to become manga artists, but they soon started to discover the big names of prog rock like King Crimson and Pink Floyd; Japanese new wave bands like YMO, Hikashu and P-Model; and the Japanese punk rock of Kenji Endo, Zunou Keisatsu, Jagatara, The Stalin and INU. Ootsuki was greatly influenced by all these bands, and started to become interested in music. Apart from music, the manga artists that most influenced him at the time were Yoshikazu Ebisu and Daijiro Morohoshi.
In 1979, after joking around at Uchida's birthday party, they formed a band with a few friends (called "Dotechinzu", or "The Donzu"). At first none of the members could play any instruments apart from Uchida, who played the Electone keyboard. Ootsuki tapped the rhythm with a bamboo stick. The band broke up after the members graduated from middle school.
In February 1982, him and Uchida formed the Japanese rock band Kinniku Shōjo Tai (back then called Kinniku Shōnen Shōjo Tai), with Ootsuki in charge of lyrics, vocals and bass. At the time Kera (Keralino Sandorovich), a senior student from Uchida's high school, had just heard the tapes they'd recorded as Dotechinzu and liked them, after which he joined Ootsuki and Uchida to form the side-project "Karate Bakabon". They released their self-titled release on Nagomu Records, the independent label run by Kera. After that, Kinniku Shoujo would also release a few albums on Nagomu. The first time they played live it became apparent that Ootsuki couldn't play bass and sing at the same time, so he entrusted the position to Uchida, who had played keyboards up until then. Then in the second half of the '80s they signed onto a major label. The way they described themselves in their promotional slogans was with the phrase "Rockers who get their leather pants from their parents".