Ruan Mei is a Genius Society researcher in Honkai: Star Rail, the HoYoverse RPG released in 2023, famous in the story for engineering artificial lifeforms. Short voice lines from her creations circulate among players who clip cute or funny moments for memes and edits. This 1.3-second munya wunya babble caught on as a wholesome reaction sound, the kind of tiny creature vocalization that sits naturally beside other playful game voice memes like Ara Ara. Its staying power comes from the game's large fanbase rather than any single viral video.