The "Ruby-chan Hai Song" meme originates from the song "AiScReam," a solo track by Ruby Kurosawa from the Love Live! Sunshine!! franchise. The meme specifically centers on the energetic and repetitive "Hai! Hai! Hai!" vocalizations during the track's instrumental breaks. It gained traction within the anime and rhythm game communities, particularly on platforms like TikTok and YouTube, where fans used the audio to accompany high-speed dancing or chaotic visual edits. The meme represents a blend of extreme moe cuteness and overwhelming energy, often used to depict situations of intense excitement, frantic activity, or the experience of playing high-difficulty maps in games like Love Live! School Idol Festival.