Akeno Himejima is a main character in High School DxD, the light novel series adapted into an anime in 2012, known for her polite, teasing manner of speech. Ara ara is a Japanese expression often used by mature female characters to show amused surprise. Clips of Akeno saying it spread through anime edits, compilations and soundboards alongside other vocal memes like Tuturu and onii-chan calls. It remains popular because the phrase signals flirtatious teasing instantly, even for viewers who have never watched the series.