Your Diary (ユアダイアリー, Yua Daiarī) is a Japanese adult visual novel developed by Cube, a brand of Cuffs. It was originally released on September 30, 2011 for Microsoft Windows. Later, Alchemist ported the game without the erotic content to the PlayStation Portable. Your Diary will be released for the PlayStation 4 and PlayStation Vita. The story revolves around Tomoki Nagamine, who has feelings for an upperclassman named Sayuki Ayase. Upon receiving a diary from the library manager, he is informed by Yua that all of his happiest memories will be recorded in the diary.