Cross Days is a Japanese erotic visual novel developed by 0verflow, released on March 19, 2010 for Windows and later ported as a DVD game and for the PlayStation Portable (PSP). The story, a dramatic slice-of-life, follows the life of Yuuki Ashikaga, a high school student who becomes the ambivalent love-interest of two girls during his second term, and the effects this has on himself and his relationships with other characters. Though the game requires little interaction from users, Cross Days engages the player through a nonlinear plot that they are given opportunities to change the course of during play. The game is the third installation of the School Days line of series, succeeding Summer Days.