Ichii made a string of wonderful noirs, including
Black Line (1960), Kurosen chitai (director) has been available
Fire Line (1961), Kasen chitai (writer) has been available
Sexy Line (1961), Sekushi chitai (director) has been available
Yellow Line (1960). Osen chitai (director) has been available
Secret White Line (1958), Shirosen himitsu chitai, hasn't turned up.
has a few words on these 5 films.
Others of Ichii's films are almost surely noirs, as Flesh Pier is. The sole IMDb review:
"Director Teruo Ishii produced a series of very stylish black thrillers during the late 50s and early 60s, his film Nyotai sanbashi is a knockout. The prolific cult director creates an engrossing tale with his unique cinematic crime action style. Behind the glittering fašade of the neon lit nightlife, a sordid world of illegal human trafficking is taking place. An undercover cop Yoshioka, infiltrates a prostitution ring at a glitzy Ginza nightclub... An excellent twisting highly atmospheric crime drama, one of exploitation, betrayal and romance follows the undercover man. A wonderful added bonus, accompanied with eye-catching nightclub entertainments and Nyotai sanbashi , displays possibly the best photomontage poster of its kind... Highly Recommended ."