Yukiteru immediately agrees and convinces Yuno to join the alliance too, although Yuno is in fact thrilled by the "Happy Ending" entry that has appeared on her Future Diary, indicating that she and Yukiteru will "become one" on July 28th. Yuno Gasai is the main female protagonist, and anti-hero of the anime/manga series Future Diary (Mirai Nikki in Japanese). She is the second diary owner in the Survival Game, and she is the owner of the "Yukiteru Diary/Diary of Future Love", and has an obsessive crush on Yukiteru Amano. She was. Future Diary (Japanese: 未来日記, Hepburn: Mirai Nikki) is a Japanese manga series written and illustrated by Sakae Esuno. The plot surrounds a battle royale in which each combatant has a diary with entries from the future.