Twintail Day, celebrated annually on February 2nd (2/2), was established by the Japan TwinTail Association in 2012 to promote the dual-ponytail hairstyle. The date was chosen because the number '2' symbolizes the two 'tails' that define the look. Every year, social media platforms like X and Pixiv are flooded with professional illustrations, fan art, and cosplay featuring the hairstyle, making it a staple event in anime and otaku culture. In the meme world, Twintail Day is used to showcase favorite characters, debate the 'best' version of the style, or simply participate in the viral wave of cute, aesthetic content that takes over the internet every February.