Night Shift Nurses

Night Shift Nurses
North American cover art for Night Shift Nurses: RN's Revenge
夜勤病棟 (Yakin Byōtō)
Genre	Erotica, Harem, Psychological, Hentai
Game
Yakin Byōtō
Developer	Mink
Publisher	Mink
Genre	Visual novel
Platform	Microsoft Windows 95 or later
Released	December 22, 1999 – October 31, 2008
Original video animation
Directed by	Nao Okezawa
Produced by	Hiromi Chiba Tatsuya Tanaka
Written by	Ryo Saga
Music by	Hiroaki Sano
Studio	Discovery AT-2 Project
Released	December 8, 2000 – August 26, 2005
Runtime	30 minutes
Episodes	10+2 specials (5.5 and 10.5)
Original video animation
Yakin Byōtō Ni (2)
Released	30 July 2004 – 27 January 2006
Runtime	30 minutes
Episodes	5
Original video animation
Yakin Byōtō Kranke
Released	27 May 2005 – 25 November 2005
Runtime	30 minutes
Episodes	3
Original video animation
Yakin Byōtō San (3) a.k.a. "Experiment"
Released	29 July 2005 – 27 January 2006
Runtime	30 minutes
Episodes	3
Original video animation
Anime Nanase Ren
Released	4 December 2005
Runtime	34 minutes
Original video animation
Anime Kazama Mana
Released	17 August 2006
Runtime	31 minutes
Original video animation
Anime Yagami Yu
Released	21 December 2006
Runtime	33 minutes

Night Shift Nurses is the North American localization of Yakin Byōtō (夜勤病棟^?, Yakin Byōtō), a Japanese OVA series adapted by Discovery from the visual novel of the same name. It was formerly licensed by Anime 18, and now by Critical Mass Video. The series is particularly notorious for its explicit depictions of rape, sadomasochism, and paraphilia.

Night Shift Nurses, as was originally written for the game, takes place in an undisclosed area of Japan, mainly at the fictional St. Juliana Hospital. A majority of the game is portrayed on campus with minor visits to the character's residences and surrounding towns.

Ryuji Hirasaka is an unemployed, middle-aged Japanese gynaecologist, single, independent, and living on his own. One evening, he receives an email from the fictional St. Juliana Hospital, a local institution, offering him a temporary job opportunity. He contently accepts, scheduling to meet with the president the following day.

That afternoon, semi-formal and with a portfolio, Ryuji commutes to the hospital. After an acquaintance with Ren Nanase, a nurse who escorts him to the president, he is frightened to discover his potential employer is a woman he had brutally raped in the past, Narumi Jinguji. In spite of the excruciating atmosphere, however, Narumi explains her wish to develop a department in the hospital that caters to the sexual interests of patients; in need of his expertise to oversee the operation. Overwhelmed with lewd excitement, Ryuji agrees.

As a result of the unrestrained content of the series, Night Shift Nurses is usually regarded as one of, if not the most graphic hentai ever released. Several minutes of particularly unruly scenes were even banned from North American releases. Industry aggregator Mania.com gave the series an F, citing that although the animation is "clean" and "slick", the quantity of edits made for the American release yields it one that "[...]I in no way [can] recommend."