It is a popular song and most probably awaited among K-Pop fans. There are a lot of good variations in the pattern. The flow seemed a bit unnaturally fast at first but good players would be able to adapt after a few tries. The main turndown was, however, the vision-blocking cubes and they are everywhere in the map.
Mapper: Filletus
Knock Knock.
Who’s that?
New Song.
WOW.