Why is that leg there!? "Defensive" Legs

Want to take a peek under the skirt of a beautiful girl? Unfortunately, you can't. Defense ni teihyou no aru hidari (migi) ashi (ディフェンスに定評のある右（左）足: a left (right) leg with a reputation for defense) is a tag which is often used on pixiv for all those artwork where the landscape is hidden by an inconveniently placed leg. You won't be able to stop looking at these illustrations...

Today we feature a number of exciting illustrations of... "Defensive" legs. Enjoy!