Yuno's personality is ambiguous. For the most part she is sweet, feminine, and sometimes shy when around Yukiteru. But, this masks her dark and sanguinary side—ruthless, cold and calculating. She has little, if any, problem with using others for her goals: 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 a Diary Holder or their followers, effectively making her a Yandere