Osamu Dazai is a main character in Bungo Stray Dogs, the manga and anime series about armed detectives with supernatural abilities. His relaxed, teasing attitude made short voice lines like yare yare, a Japanese expression similar to good grief, easy to clip and reuse. Fans began sharing the sigh as a standalone reaction sound on anime edits and soundboards, where its brief length and recognisable tone work even without the original scene. It remains popular for edits that need instant exasperation.