One: Kagayaku Kisetsu e

One: Kagayaku Kisetsu e (One ～輝く季節へ～; lit. One ~To the Radiant Season~) is a Japanese adult visual novel, developed by Tactics, a brand of Nexton, released on May 29, 1998 playable on Windows PCs. The erotic content was later removed when the game was ported to the PlayStation, which also contains an additional route. The story follows the life of Kōhei Orihara, a high school student who has fun spending time with several girls about his age, while at the same time he is gradually being drawn into a mystical alternate space known as the Eternal World.