i think they lazy to think of new song so they combine the 2 and
market is like, wow, this is out of this world.
but quite failed.
the 2 songs nicer if listen separately
i think stranger is the best one so far
though they oredi release the jipoonese version earlier
The tune is from CLUE, the chorus from NOTE...
Then they suka suka merge both and tada, a new song...
Weirdly enough the songwriter is a very famous one in
Korea.
Surprised that it turned out like that...
And the artistic direction (the overall package) like very
poor.
Once you see artistes having to come out half-naked in the album
covers you know they are kind of desperate... 
낯선자 (Stranger) sounds too Japy... Too Nippon for my taste...