http://www.egscomics.com/d/20020416.html
So, Elliot thinks of those kind of attacks as trendy? So is it popular among the students there or something? If so I can just imagine Nanase insisting she used those techniques before they were cool. Though come to think of it I have seen something like it used in anime a few times before.
Also, if that's specifically Nanase's "Look at me, I just kicked Elliot" victory pose I wonder what some of her other ones look like.