"Twins") is a 1999 horror film by Shinya Tsukamoto, loosely based on an Edogawa Ranpo story, which pursues his theme of the brutally physical and animalistic side of human beings rearing its ugly head underneath a civilized veneer, present in previous films like Tetsuo: The Iron Man (1989) and Tokyo Fist (1995), in what is a new territory for Tsukamoto—a story set in the late Meiji era (1868–1912) with no stop-motion photography and no industrial setting.

Dr. Daitokuji Yukio (Masahiro Motoki), a former military doctor who has taken over a successful practice from his father and treats plague victims, is living a charmed life: he is a respected young doctor with a successful practice and Rin (Ryo), a beautiful wife.

While isolated from his relatives, he one day faces the mysterious stranger who turns out to be his long-lost rejected twin, Sutekichi (again Motoki).

[5] Variety gave the film a generally favourable review, stating that "this strikingly designed thriller is gripping despite a certain heavy-handedness and the director's customarily chaotic narrative approach.

[8] Contrarily, the media site Grimoire of Horror praised the frantic narrative for "absolutely breath taking plot twists, scenes of highly choreographed mayhem, beautifully erotic sequences, in-your-face class divide parables".