Doukyusei

Doukyusei (Japanese: 同級生, "classmates"), alternately or dōkyūsei or doukyuusei, may refer to:


 * Classmates (manga), a manga series released in Japan as Doukyusei, and its film adaptation Doukyusei: Classmates
 * Dōkyūsei (video game series), an eroge video game series
 * Dōkyūsei (video game), the first game in the series