Kiryu Coco was a dragon VTuber with Hololive Japan's fourth generation, debuting in late 2019 and graduating in July 2021. Known for chaotic English and Japanese streams, morning AsaCoco segments, and unfiltered humor, she built a huge international following in a short time. Clips of her losing composure circulated widely among Hololive fans on YouTube and social media, turned into short reaction sounds after her graduation. This sanity line survives because it captures her exaggerated, meme-friendly energy in a instantly reusable moment.