A short Japanese voice clip of Muska saying "What are you doing?" from Castle in the Sky, used in anime edits, reaction memes, and sudden interruption jokes.
This clip is a very short line in Japanese from Muska, delivered as a sharp, startled "What are you doing?" The voice lands fast and clean, so it works well as an interruption, a scolding reaction, or a dramatic cutaway in an edit. Even at just over a second long, it gives a scene instant tension and a slightly theatrical anime feel. Viewers read it as a suspicious or disapproving response, which makes it useful for punchlines, caught-in-the-act moments, and over-the-top reaction posts.
This sound is associated with Muska from the 1986 Studio Ghibli film Castle in the Sky, known in Japanese as Laputa: Castle in the Sky. Short Muska voice clips have circulated in anime communities, soundboards, and meme edits because his delivery sounds stern, controlled, and instantly recognizable to fans. This line stays useful online because it is brief, easy to place over visual punchlines, and fits the familiar format of an abrupt anime reaction.