"Limitless (Japanese Ver.)" Released: November 4, 2017
"Chain" Released: May 8, 2018
Chain is the debut Japanese extended play (fourth overall) by South Korean boy band NCT 127, the multi-national and second sub-unit of NCT. The five-track extended play was released on May 23, 2018 by their Japanese record label Avex Trax. With SM Entertainment's founder Lee Soo-man serving as the executive producer, the record featured composition from production team Caesar & Loui, Kanata Okajima, 250, Albin Nordqvist, Kenzie, Mike Daley, MZMC, Harvey Mason Jr., J Que, Kevin Randolph, Mitchell Owens, Deez, Tay Jasper, Andrew Choi, MEG.ME and others. It was preceded by the Japanese version of "Limitless" as the first single on November 4, 2017, followed by the eponymous second single on May 8, 2018. To further promote the release, the group had their first showcase tour prior to its release.
Upon its release, Chain achieved commercial success for the group. It debuted at number two of the Oricon Weekly Albums chart with 44,832 copies sold on its first week of release, eventually went on to achieve a total of 49,289 copies in Japan. In addition, the extended play also debuted at number eight on the Billboard World Albums Chart, earning the group's fourth top-ten entry.[1][2] It was NCT 127's last album to feature the nine-original member line-up, before the addition of member Jungwoo later in September 2018.
^週間 アルバムランキング 2018年06月04日付 [CD album weekly ranking from May 21, 2018 to May 27, 2018] (in Japanese). Oricon. Archived from the original on May 30, 2018. Retrieved May 30, 2018.