# Depth (EP)

Depth is the debut extended play (EP) by Japanese singer Yuta released on October 3, 2024, by SM Entertainment and Avex Trax. Yuta wrote and produced six of the EP's seven tracks, including its lead single, "Off the Mask". The EP's lyrics see the singer exploring themes of rebirth, growth, and a desire to show a different side of himself from the K-pop idol persona portrayed in his boy band, NCT 127. Upon its physical release in November 2024, the Depth debuted at number four on Japan's Oricon Albums Chart, and was promoted by the singer with a showcase tour throughout Japan.

## Background and release

As the first Japanese artist to debut under SM Entertainment, Yuta became a member of South Korean boy band NCT and its first sub-unit NCT 127 in 2016 with their first EP NCT#127. The band went on to become SM's best-selling act, and one of the best-selling K-pop acts of all time with over 40 million albums sold across all units.
In August 2024, SM announced that Yuta would be embarking on a tour of Japan in October, and that he would be debuting as a soloist in the second half of the year. Depth was first announced on September 6, 2024 in a post on NCT's official Japanese X account. The post communicated that the album would be released on November 13, and included a video that revealed the EP's track listing. Another post followed on October 1, announcing that the EP, along with a music video for the lead single "Off the Mask", would be released digitally on October 3, in advance of Yuta's tour commencing on October 5. A teaser video for "Off the Mask" was released the next day.
Depth was released digitally to music download and streaming services on October 3, 2024, along with the music video for "Off the Mask" A physical release of the EP followed on November 13, in four different editions: Internal, Superficial, Existential, and a standard edition. With the EP's release, Yuta became the fifth NCT member to debut as a soloist, following Taeyong, Ten, Doyoung, and Jaehyun.

## Composition

A departure from the typical output of NCT and NCT 127 which is largely hip-hop, Depth is primarily a rock album. Depth comprises seven tracks, with Yuta contributing lyrics to six of the seven tracks, along with participating in composition and production.
The first song, "Last Song", is a rock ballad with lyrical content about growth coming from one's past mistakes and regrets. The EP's second track, "Off the Mask", serves as the EP's lead single. The song is described as the most intense J-Rock and metal song on the EP, and sees Yuta sing about his desire to "take off the mask" and show a different side of himself compared to his usual K-pop boy group persona. Throughout the song, the singer employs screaming and scratching vocal technique. "Save You" is a song described as "anthemic" song about living on one's own terms.
The EP's fourth track, "Bad Euphoria", is the only track that Yuta did not write lyrics to. The song is influenced by British rock music and contains lyrical content exploring desires and disregarding stigmas. "Prisoner" is described as a track that contains "sweeping rock melodies" and is noted as a favourite among the singer's fanbase for its lyrics about being free from expectations. The lyrics for "Goodbye" were written by the singer alone in fifteen minutes.
"Butterfly", the final track on the EP, is a song that was originally performed on NCT 127's Neo City – The Link tour beginning in 2021. The song is subtitled "Depth ver.", and received a more rock influenced production compared to the original electronic version performed on the tour. The song speaks of the growing pains a butterfly experiences during its metamorphosis.

## Promotion

Yuta promoted Depth with his first tour, entitled "Hope". The tour began on October 5 in Fukuoka, and continued throughout Japan, with additional shows in Aichi and Tokyo, before culminating with two performances in Osaka on October 26 and 27. All shows on the tour were sold out.
The tour's setlist included all songs from Depth, and covers of songs from various Japanese musicians, including "Glamorous Sky" by Mika Nakashima and L'Arc-en-Ciel's "Shinshoku (Lose Control)". Yuta also performed two unreleased songs: "Two of Us", and "New World". The shows also displayed behind-the-scenes content from the creation of Depth and audience engagement through question-and-answer sessions.

## Commercial performance

Depth debuted at number four on Japan's Oricon Albums Chart for the week ending November 17, 2024, with total sales of 35,154 copies. The following week, the album fell to number 45 on the chart, with sales of 992. On the month-end tally for that chart, Depth charted at number 15 for the month of November, moving a total of 36,366 copies. On the Oricon Combined Albums Chart, which tracks digital downloads, streams, in addition to physical sales, the EP debuted at number five.
On the Billboard Japan Hot Albums chart, Depth debuted at number 20 for the week ending October 9, 2025. Following the EP's physical release, the album re-entered the chart, peaking at number four for the week ending November 20.
The EP's lead single, "Off the Mask", entered the Billboard Japan Hot 100 for the week of the EP's physical release, peaking at number 99.

## Release history

Release history for Depth :
| Region | Date | Format | Label | Ref. |
| Various | October 3, 2024 | Digital downloadstreaming | SMAvex | |
| Japan | November 13, 2024 | CD | SMAvex | |