A fairly simple Fanservice trope. When the camera pans to a woman, focusing on the curves of her back, it's this trope. Whether she's arching her back, or if the curves happen to be there, it's this trope.
One can attain this most notably through a Walking Swimsuit Scene
, Toplessness from the Back
or full-on nudity.
- Bleach has this as one of Haineko's more defining aspects in her figure. Two of which were when she was looking◊ at Narunosuke◊. One◊ was when she was looking at Senbonzakura. Three◊ were◊ with◊ Rangiku. One◊ was when she just stared at a light.