Nakadoi Hiroki used to be a member and the leader of the Japanese boy band Lead. He likes to play basketball and startet dancing as a 9-year-old. He is very scared og pigeons and bugs. He was chosen to play Tsurumi Akihiko who is the rival of Takenaka Yuta played by Seto Koji in Tumbling.
In March 2013 he graduated from Lead and completely withdrew from the entertainment industry.