The “arigato nyah” sound spread through short-form videos as part of the internet’s long-running love of anime-inspired, catgirl-style voice clips. It is commonly used on TikTok and in meme edits where creators lean into kawaii speech, ironic roleplay, or exaggerated gratitude. Its appeal comes from being instantly recognizable, easy to loop, and flexible enough for both sincere cute posts and joke edits. It often appears alongside other catlike audio trends such as nya cat girl sound, especially in anime, cosplay, and pet content.