National VTuber Day is celebrated on May 25 to appreciate VTubers, who are online performers using computer-generated avatars. This phenomenon began in Japan and has grown into an international trend, with many VTubers being Japanese and English-speaking live streamers or YouTubers. The day encourages fans to engage with VTubers through activities such as watching VTube marathons or exploring anime and manga. VTubers often conceal their real identities to maintain their character's lore and typically use motion capture technology to animate their avatars. Unlike traditional YouTubers, VTubers present themselves through anime-styled avatars rather than on-camera appearances. The day serves as a celebration of this unique blend of technology and entertainment.