The 'Hare Hare Yukai Dance' originates from the ending theme of the 2006 anime series 'The Melancholy of Haruhi Suzumiya.' Featuring the five main members of the SOS Brigade performing a synchronized choreography, the sequence became an overnight sensation and one of the first major viral dance trends on the internet. It sparked countless real-life flash mobs and fan-made animations across platforms like YouTube and Nico Nico Douga. Today, the meme is used to celebrate peak anime nostalgia, represent joyful group activities, or parody various fandoms by placing different characters into the iconic dance positions.