Gravitational Pull and Boob Napkins
More Senran Kagura: New Wave, and in the first picture I assume her breasts are emitting their own gravitational field which is why she's got boobsocks, and why it's sucking her butt towards it.
In the second picture she seems to be showing off the boob napkins that she apparently stole from the girl in the Unitia ad, maybe they're all the rage among Escher Girls now.
(Art from Senran Kagura: New Wave, Marvelous Entertainment, submitted by thebiscuiteternal)