"Say the name SEVENTEEN!" SEVENTEEN (세븐틴) is a 13-member boy group under Pledis Entertainment. They officially debuted on May 26, 2015 with the mini-album 17 Carat.
The group is made up of three units: hip-hop, vocal, and performance. They are known as a self-producing idol group as they are involved in composition and production of their own discography and choreography.
In December 2012, it was announced that a seventeen member boy group will soon debut under the name SEVENTEEN with the average age of 17. The TV show, Seventeen TV will show the members of the group going through their training and debut preparations as well as their everyday lives. The show started broadcasting in January 2013 and ended in August 2014 with five seasons. SEVENTEEN also appeared in the reality TV show Seventeen Project: Big Debut Plan, broadcast on MBC between May 2–26, 2015, where the members had completed missions while being split into a hip-hop unit, a vocal unit, and a performance unit.
On May 26, the group made their debut with a live showcase televised by broadcasting network MBC. They had a one-hour live showcase, with label mates After School's Raina and Lizzy as MC, on a major broadcasting network, the first for any K-pop group. Three days later, the group released their debut mini-album 17 Carat with the title song "Adore U", with the title song described as a funky pop song about a teenage boy trying to navigate through puppy love. The song marks the beginning of the group's trilogy and represents a boy meeting a girl. Members Woozi helped to write and produce all of the tracks on the mini album, while Hoshi created the choreography for the pre-release “Shining Diamond” and the title track “Adore U". The song was critically acclaimed charting high with various reviews noting as a group to watch in 2015.