On July 15, 2009, their first single, "NYC/Akuma na Koi", "NYC" being the theme song for the FIVB World Grand Prix 2009, was released.
In November, the media announced that they would be guest appearing on Japan's highest-rated annual music television show, Kōhaku Uta Gassen, on December 31, 2009.
On January 1, 2010, the media announced that the group would not be a temporary one anymore and that Ryosuke Yamada and Yuri Chinen would be working as members of both Hey!
In February 2012, NYC released their 4th single, which is titled Wonderful Cupid and contains Yuma Nakayama's solo song Glass no Mahou.
On January 28, 2025, during Nakayama's last concert series as a Starto Entertainment artist,[2] called "YUMA NAKAYAMA LIVE TOUR 2025 Wings For The GOOD VIBES",[3] Yamada and Chinen appeared as guests, reviving NYC for one afternoon.
NYC has not officially disbanded, as Yamada and Nakayama stated, they are leaving it as is, so if there is a possibility in the future to reunite, they can.