Chiikawa began as a manga by Nagano and became an anime in 2022, following small cute characters in a gentle but sometimes strange world. Usagi, the energetic rabbit friend of Chiikawa and Hachiware, became a fan favorite for unpredictable behavior and loud, high pitched vocalizations instead of normal speech. Short clips of those noises spread widely on social media and soundboards, where they work as instant reaction sounds. The Wula note remains popular because it is recognizable in under a second and needs no context to feel funny.