Kouhei Kagami is a Japanese student with excellent grades and a fairly normal social life, but feels empty and transparent inside. The story revolves a pivotal moment in Kouhei's life where three girls, that have more problems than himself, meet him for the first time and soon make his life a roller coaster of emotions. Kouhei must choose to save one of them from their own despair. The plot follows the same basic route for the first half of the game. Kouhei goes about his life and makes friends with three main girls: Aeka, Mizuki, and Nekoko.