NU'EST W has topped charts with "And I".
The OST song for "Mr. Sunshin" had been revealed at 6PM KST on the 26th, and the song topped Naver, Mnet, and Soribada's real-time charts. Topping charts is difficult by itself, but topping a chart with an OST song is even more difficult. The song's to have 'broken concrete', as the current charts are dominated by steady, long-charting songs.
Congratulations to NU'EST W. You can check out the song here.