JUMP member Ryosuke Yamada and their senpai, Kazuya Kamenashi (KAT-TUN).
JUMP members: Daiki Arioka, Ryosuke Yamada and Yuto Nakajima.
In October 2008, he was in the drama called Scrap Teacher: Kyoshi Saisei as Yoshida Eitaro, along with the same Hey!
As a supporter of the Japanese volleyball team for the FIVB World Grand Prix 2009, he performed in June 2009 with Ryosuke Yamada and Nakayama Yuma w/ B.I.Shadow, which is composed of Kento Nakajima, Kikuchi Fuma, Hokuto Matsumura and Yugo Kochi as members of the temporary group NYC Boys.
Ryo Nishikido (and formerly Uchi Hiroki) is the only such case of a Johnny's talent officially debuting in two groups (Kanjani8 and NEWS), and as NYC became an officially debuted Johnny's unit, Yamada and Chinen joined them in this unusual situation.
In September 2011, he played the voice of Brainy in the Japanese-dubbed version of the film The Smurfs.
JUMP's ninth single, "Magic Power", was used as the theme song for the film.
In January 2012, Chinen co-starred with his senpai Tomohisa Yamashita in a drama called Saiko no Jinsei no Owarikata: Ending Planner, in which he played Yamashita's younger brother.
Chinen's character in the drama was a university student who was so focused on helping out a friend to the point of stealing money from his family's business.
In June 2012, It was announced that Chinen would have his first lead-role drama series based on the manga Sprout, by Atsuko Nanba, on July 7 on NTV.