Quote Originally Posted by Yukimura
I didn't really want to drag this into a physics discussion but what the hell it's fun. The weirdness doesn't come from her mass it comes from her apparent momentum. Even if she was super dense she would still crush buildings when landing on them in human form because of her huge dragon mass. The scene where she got knocked into the ground in dragon form showed a more believable effect on the surroundings when that much mass hits something moving at a decent speed. But when she was roof hopping with Jin she didn't seem to disturb the buildings at all. I don't have any problems with bent or broken laws of physics in anime (it's magic is more than enough of an explanation), but a broken law is still a broken law.
lol... I thought you were saying that you didn't understand how she could have such a high mass in dragon form like that and turn into a human form.

...yeah she probably should have crushed Jin 's face in when she kissed him

On the subject of the building hopping thing.... perhaps she still retains "dragon flight abilities" in human form and uses them to cushion the impact.