Here is an archive of the comics that have been posted on Himaruya Hidekaz's blog and have been published in Shonen Jump Plus and Monthly Comic Birz.
http://www.hetarchive.net/scanlations/index.php
And here is a tumblr page that has Scanlations of the published manga (World Stars) too!
http://hetascanlations.tumblr.com/
This is the "Hetalia of the Dead" you were talking about, it does have popcorn but America is just eating it.
http://hetalia.livejournal.com/12297036.html

(And the reason Americans connect popcorn with movies is that during the Great Depression, when movies were one of the few escapes from the depression. Since it was a cheap snack to make and could be sold at a low price and still make a profit, theaters started making it to feed to the audiences. Actually before then popcorn was a popular street snack but the high class theaters did not allow it because it would mess up the carpeted floors. And that is your random history fact for today!http://www.salon.com/2013/10/06/the_gre … s_partner/)