Rio's singing improvement [Holostars]

source:2023: https://www.youtube.com/live/gg3bF_CtE28?si=CTqjfrcbHhGcXFnq2024: https://www.youtube.com/live/iRsuLy5dFEU?si=mUmWbR1N_6T5kmYC#vtuber #vtubercli...