noun
Roman Porno; Nikkatsu adult film series (1971-1988)
Refers specifically to the erotic film series produced by Nikkatsu studio between 1971 and 1988. The term is a proper noun and a historical film genre name.
ロマンポルノは1970年代から80年代にかけて日活が製作した成人映画シリーズです。
Roman Porno is an adult film series produced by Nikkatsu from the 1970s to the 1980s.
From English 'roman porno', a coined term combining 'roman' (romantic) and 'porno' (pornographic).