Yuno Gasai is the main female protagonist in the anime series Mirai Nikki, also known as Future Diary. She is a highly intelligent, yet mentally unstable character with a complex personality. Yuno is deeply in love with the main protagonist, Yukiteru Amano, and will do anything to protect him, even if it involves violence or manipulation. Her diary, the 'Yukiteru Diary,' allows her to predict Yukiteru's future, making her a formidable opponent in the deadly survival game. Yuno's past is filled with trauma, which fuels her obsessive and protective nature towards Yukiteru.