Green Green takes place in Japan's countryside, in a non-descript region with forests and an isolated boarding school known as Kanenone Gakuen (鐘ノ音学園, literally translated as Sound of Bell Academy) The academy boasts of an entirely male population, and prides itself of the tradition of men growing amongst other men without any external influences to disturb them.

The protagonist is named Yuusuke Takasaki, a second year student that is indifferent to the lonely, girl-deprived atmosphere that surrounds the school.

His three friends, Tadatomo "Bacchiguu" Ijuuin, Hikaru Ichibanboshi and Taizou Tenjin, however, feel as if they are being denied their youth by having no females to interact with.

As luck would have it, Kanenone's current administration is considering making the academy co-ed, and in order to see how the change would affect the student body, first and second year girls have been brought to live on school grounds for one month.

Though Yuusuke takes the change in stride, his three hormone-driven friends see this as the true beginning of their youth.

Some pre-set interactions are influenced by which girl Yuusuke last talked to and what choices the player made for him recently.

Backgrounds are used to display the current location, with images of characters in Yuusuke's line of sight appearing on the screen.

Kutsuki vs. Kuchiki: The pronunciation of Futaba and Wakaba's last name has been the subject of debate since the release of the game.

The game itself seems to have trouble deciding how to pronounce 朽木, often shifting between Kutsuki (くつき) and Kuchiki (くちき).

In 2000, the staff involved in the work of Green Green heavily engaged in Frontwing's first work, Canary ~Kono Omoi wo Uta ni Nosete~ finally releasing the project around August 2000, shortly after the release of Canary, half of the original staff including Bamboo decided to go on a trip to the countryside as vacation time to come up with their next project which was their next main focus for their game Green Green, a supposedly planned second work following before another game Hooligan which was scheduled to be released the summer of 2001, according to the Blue Canary fan disc released on Comiket 59.

After some discussions, Gungho and Frontwing signed a verbal agreement to communicate effectively on issues regarding the game.

This confused fans and publishers, which caused controversy within the visual novel community in Japan.

Still, because the work had little affiliation with Front Wing, as admitted by Front Wing in a short post on their site dating back to June of that year, the law sided with Gungho and Bamboo as it was already too late to decide as the release was already released, finished and published by a different entity.

The critical lesson learned from this copyright case is the importance of clear and formal agreements, communication, and transparency in business collaborations, especially in creative industries like video game development.