Well, when Tsumugi is moving around in the space, she creates a Higgs particle jet just like a Gardes. Now, Gardes clearly creates the jet from its engine, but how about Tsumugi? Does she...fart? Is that it? Does she fart Higgs particles to jet around?
The reason I asked this is that a human's fart contains methane which is combustible. And since Tsumugi is shown to produce a blue jet of Higgs particles from under her dress... Does a similar mechanism apply here?