Ningen Isu (Japanese: 人間椅子, Hepburn: Ningen Isu, lit. 'The Human Chair') is a Japanese heavy metal band formed in Hirosaki in 1987. The band's current line-up consists of co-founders Shinji Wajima (guitar, vocals) and Ken-ichi Suzuki (bass, vocals) alongside Nobu Nakajima (drums, vocals), who joined in 2004. All three members contribute to the songwriting process. They have been noted for their stage personas, with Wajima dressing as a Meiji-era literary master, Suzuki dressing as a Buddhist monk, and Nakajima dressing as a Yakuza-style gangster.