夜勤病棟 (Yakin Byoutou; "Night Shift Nurses" in English) is an erotic visual novel series by Mink and their subdivisions "M no VIOLET" and "M ni AQUA". The brand also includes several erotic mahjong games, multiple hentai OVAs, a pachislo (slot machine) game and SM club.

h6.Staff
[[ZATOU]]: Character Design
[[Yakin Byoutou]] (1999), [[Yakin Byoutou ~Tokubetsuban~]] (2000), [[Yakin Jantou]] (2002), [[Yakin Byoutou Fukkokuban+]] (2006)

大田和範 ([[Oota Kazunori]]): Genga
[[Yakin Byoutou]] (1999), [[Yakin Byoutou ~Tokubetsuban~]] (2000), [[Yakin Byoutou Fukkokuban+]] (2006)

森田和明 ([[Morita Kazuaki]]): Character Design, Genga
Yakin Jantou (2002), [[Yakin Byoutou Ni]] (2004), [[Yakin Byoutou San]] (2004), [[Nanase Ren]] (2005), [[Yakin Jantou Ni]] (2005), [[Kazama Mana]] (2006), [[Yakin Jantou Ichi Ni Fukkokuban+]] (2008)

さんた☆まりあ aka さんた茉莉 (Santa☆Maria aka [[Santa Matsuri]]): Genga
[[Ren no Koi]] (2008), [[Ren no Koi Others]] (2009)

壽々郎 aka 寿々郎 ([[Jujurou]]): Genga
[[Yakin Byoutou Zero]] (2012)

佐々木良和 ([[Sasaki Yoshikazu]]): Genga
[[Shin Yankin Byoutou]] (2011)

saxasa: Genga
[[Yakin Byoutou Zero]] (2012)
夜勤病棟 夜勤病栋 야근병동