"Deep Throat in Tokyo", directed for Toei in 1975, is his best-known film.Comparing Mukai's film to the original "Deep Throat" (U.S., 1972), Jasper Sharp writes that Mukai's film, a softcore, "airbrushed fantasy" with a higher budget and, in Kumi Taguchi, a more attractive leading lady, is "a world apart from the more crude and direct approach taken by its revolutionary American model."