Justin has a fondness for hair. So do I, though I wouldn't know how to braid it. I have a basic understanding of it, but "basic understanding" and "actually able to do" are two different things.
The spell Nanase is using is one of my favorites in the history of the comic, which should only become more apparent as time goes on. The exact results, however, of it have been tweaked over the years. For one, Nanase used to assume a more reddish hue overall when using the spell, which was represented in greyscale with slightly darker skin. At some point in the future, I decided to just stick with her normal palette for the fairy.
The glowing changes a bit, too, but that's actually addressed in story, so I'll comment on that when we get there.
Commentary added December 31, 2014