我妻 由乃

Ability: Yukiteru Diary - Yukiteru's condition and actions are recorded every ten minutes and it also provides small commentary made by Yuno in some of the entries. However, it does not show Yuno's future at all—her condition, situation, or surroundings—unless it somehow involves Yuki.

The main female character of Mirai Nikki. Yuno's personality is ambiguous. For the most part she is a sweet, feminine, and sometimes shy girl when around Yukiteru. However this masks her dark and sanguinary side—a ruthless, cold and calculating psychopath who has little, if any, problem in using others for her ends: her and Yukiteru's survival. She will resort to cruel and usually violent methods, most of the time coming out of nowhere, that generally end in bloody deaths, of either the Diary Holder or any respective follower, effectively making her a Yandere. She also has some proficiency in using weapons such as axes and scissors.