I managed to trace it back to https://www.facebook.com/braveking.co.kr/media_set?set=a.10200175007683220.1073741830.1392337940&type=1 from pinterest, but I'm not really sure how to tag that as a source. I'm using the page's username for the time being, but feel free to change it, anyone who has a better idea

DocAquatic said:

I managed to trace it back to https://www.facebook.com/braveking.co.kr/media_set?set=a.10200175007683220.1073741830.1392337940&type=1 from pinterest, but I'm not really sure how to tag that as a source. I'm using the page's username for the time being, but feel free to change it, anyone who has a better idea

Nice detective work. All I know from /co/ is that it was created by a Korean artist.