He released his debut CD single in 2009 as part of Yuma Nakayama w/B.I.Shadow and NYC Boys.
JUMP member, Ryosuke Yamada and Yuri Chinen to form a special group called NYC Boys.
[3] Yuma Nakayama w/B.I.Shadow provided the theme song of the drama titled Akuma na Koi which went on to sell 100,000 plus copies to date making them the youngest group to top the Oricon chart beating the previous record of Hey!
[4] 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.
[5] On January 1, 2010, media announced that the group would not be a temporary one anymore and that Ryosuke Yamada and Chinen Yuri would be working as members of both Hey!
In February 2012, NYC released their fourth single which was titled "Wonderful Cupid" and contained Nakayama's solo song Glass no Mahou.
Yuma played a role as a Kabuki actor from a non-Kabuki inclined family in the drama Pin to Kona.
It was announced that Yuma would have New Song "Ai made ga naifu" as the ending theme of Fuji TV's daytime drama "Tengoku no Koi" which started on October 28 and was shown everyday from 13:00–14:00 (JST) starred by Johnnys Juniors Takada Sho and Uchi Hiroki.
[7] Nakayama was cast as Jotaro Matsui in a Fuji TV adaptation of the manga Smoking Gun[8] together with his senior Shingo Katori.