A world with Troubles and Traces.
It's kind of like a sequel to Trace and Trace 1.5, but it's by a different author/artist and has different characters, although it's the same world.
Original webcomic: http://cartoon.media.daum.net/webtoon/view/traceperfume
Related:
Trace ( http://www.batoto.net/comic/_/trace-r112 ) Trace 1.5 ( http://www.batoto.net/comic/_/trace-15-r2888 )
