Description: When I came to, I found myself in a white room that I didn't recognize... The protagonist, Keisuke Takatou, was locked in a white, closed room with the six heroines. His childhood friend Kanae Hokari, class rep. Miyako Andou, junior Rika Makiba, English teacher Natsuki Aoi, same-year student Rinne Byakuya, and classmate Nemu Manaka. All of them were confused by this abnormal situation, when a "mysterious voice" suddenly announced to them... "The game will now begin."