Overview
is a Japanese, 12-episode anime adaptation of the H-game of the same name. A non-canon sequel exists to the story as a thirteenth episode, which was released at a later date. This 'Episode 13' is unlicensed and not included in the US release.
Media Blasters licensed Green Green for distribution in North America, and the first volume was released on May 16, 2006. They have since released the 12 TV episodes on three DVDs, first separately throughout 2006, and then in two different budget collections in 2007 (the original single volumes in a box) and 2009 (the three discs in one "Litebox" case). The series premiered in the U.S. television in January 2016 on the channel Toku.
Story
Green Green takes place in the countryside of Japan, at the isolated all-boys boarding school of Kanenone Gakuen (translated literally in English as "Sound of the Bell Academy"). Since there are no females for miles, the school is advertised as the "last remaining paradise for men on Earth". The Kanenone school board has begun talks to merge with an all-girls boarding school, in hopes of becoming a co-ed boarding school. This has the hormone-driven, girl-deprived male body of Kanenone thrilled.
Both schools decide to have a test run of sorts, having the girls from the all-girls school stay at Kanenone for a month, in order to see how the boys and girls can get along with one another. Yuusuke Takazaki, the main character, has his hands full with his "perverted" roommates, nicknamed the Baka ("Idiot") Trio. The Baka Trio - which consists of Bacchi-Gū, an overweight shameless pervert, Ichiban-Boshi, a self-proclaimed ladies man, and Tenjin, a gentle giant who has a "little sister" fetish - are incredibly excited that there will be girls around at their school.
From Wikipedia (CC BY-SA 4.0).