Boys24 ( 'Sonyeon Ishipsa', stylized as BOYS24) was a South Korean pre-debut boy band formed by CJ E&M through a 2016 survival show with the same name. There were twenty-seven members in the group divided into four units. The group performed regular shows in their own concert hall, with the debut of the final eight members IN2IT on October 26, 2017.

The first promotional unit (later dubbed Unit Black) who were selected from the 'BOYS24 The 1st Semi-Final' concert consists of Park Doha, Hwang Inho, Oh Jinseok, Kim Sunghyun, Kim Yonghyun, Jung Yeontae, Yoo Youngdoo and Han Hyunuk. The unit release their first single album, Steal Your Heart on April 11, 2017 on Mnet's M! Countdown with the song title "Steal Your Heart".

After completing 260 concerts, the final group was selected from "The Final", consist of eight members: Yoo Youngdoo (Yoo Jiahn), Jeong Yeontae, Hwang Inho, Han Hyunuk, Isaac Voo, Lee Inpyo, Kim Jinsub and Kim Sunghyun. They debuted on October 26, 2017 as IN2IT.

History On January 10, 2016 CJ E&M announced that they were investing 25 billion won ($20.6 million) over the next three years in a new boy band to perform throughout the year at a permanent venue. CJ E&M had named the boy band and project name "Boys24", to air the whole process from selecting members to performing in front of audiences.

Concept of Boys24

First, Ahn Seok-joon set the stage of 'Boys24' as four stages, the first being 'excavation'. Of the total of 5500 applicants, 49 were selected by Mnet.com as untreated gemstones. The second stage was 'competition'. The unfinished 49 people formed a total of seven unit teams, where they would vividly confirm their intense competition. The third stage was 'growth', a process of the birth of a 24-member Boys24, which would be confirmed in the theater. The final stage was 'evolution'. It could be said that they had evolved to become a crystal, and among the 24 people, a few select members who had the highest level in all aspects would make their debut as an idol group. They would enter the world of 'pro' and start full-scale activity.

January 2016 – August 2017

The auditions were held from January 18 to February 19. However, due to the large number of applicants, which was more than 4000, the final date of the audition was shifted to March 11. Forty-nine participants who passed the audition competed in a survival show which began airing on 18 June 2016.

After the survival show ended, twenty-eight people were selected as Boys24 members, and the group held their concert three to five days a week in rotation. The concert was set to take place at the Boys 24 X Booto Hall, also known as Mesa Hall, near Shinsegae's duty-free shop in Myeongdong, Seoul. The first concert was held on September 22, 2016.

On August 25, 2016 the group made a special appearance at M! Countdown performing their song "Rising Star". In September 2016, Yellow Unit from the group were chosen as the models for 새싹보리 a barley drink, sold by CJ Health Care. On September 10, 2016, Unit Yellow and Unit Sky from the group held their first fan meeting in Hong Kong. On September 27 and 28, 2016, the group held "Boys24 Live Preview" press call at their own hall to promote their own concert.

On November 2, 2016, Unit Yellow's music video for "E" was released as an award for the unit for being MVP Unit. The track also released on music sites and charted No.1 on Mnet's music chart. On November 3, 2016, Unit Yellow and Unit Sky made a special appearance at M! Countdown performing their song "E". A week later all units from the group made a special appearance again on M! Countdown performing "E".

On December 1, 2016, the group announced that they would collaborate with DIA TV as part of Monthly Idol project broadcasting with various creators from DIA TV. On December 7, 2016, the group released two versions of their first live album from their concert BOYS24 LIVE in CD format. The first version of the album was recorded by Unit White and Unit Green while the second version of the album was recorded by Unit Sky and Unit Yellow.

On February 14, 2017, Lee Hwayoung was removed from the group and his contract was cancelled following his leaked audio controversy for making offensive comments about fans.

On March 5, 2017, the group held 'BOYS24 The 1st Semi-Final' concert at the Hall of Peace at Kyung Hee University in Dongdaemun, Seoul. The concert was broadcast live on Mnet and M2. Through the concert Park Doha, Jin Sungho, Hwang Inho, Oh Jinseok, Kim Sunghyun, Kim Yonghyun, Jung Yeontae, Yoo Youngdoo and Han Hyunuk were selected to promote as promotional unit for three months. The promotional unit would perform on KCON Japan, music programs, and entertainment shows.

On March 10, 2017, CJ E&M and Liveworks announced that Jin Sungho to leave his position as part of the first promotional unit but still remain in the group following controversies about his past actions in junior high school. The first promotional unit would move forward as an eight-member group.

On March 23, 2017, the group announced that the first promotional unit official name was Unit Black. The name was voted by fans through a team naming event that was announced on the group's official fan cafe. On April 11, 2017, the unit released their first single album, Steal Your Heart on Mnet's M! Countdown with their song "Steal Your Heart".

On August 12, 2017, the group held 'BOYS24 The Final' concert at Olympic Park Olympic Hall, Seoul, marking the end of Boys24 survival project after 1 year and 6 months. The concert was broadcast live through V Live. Hwang Inho, Jung Yeontae, Kim Jinsub, Kim Sunghyun, Yoo Youngdoo, Isaac Voo, and Jin Sungho were announced as final group members by fans vote, while Lee Inpyo and Han Hyunuk were selected as Wild Card directly by company, completing final line-up as nine-member group. The final group would start their overseas promotions right away, starting with visiting Japan on August 26 followed by Korea Tourism Organization invitation to Kazakhstan in September.

On August 14, 2017, MMO Entertainment, who manage the debut team, announced that Jin Sungho had left the team due to differing musical point of view.

Survival show

The survival show with the same name as the group was a 2016 reality boy group unit survival show that aired every Saturday 10pm on Mnet and tvN. It was a large-scale project in which the units of a selected number of members would be produced from a pool of 49 free-agents.

The show consists of 8 episodes, airing from June 18, 2016 to August 6, 2016. The highest ratings for this show is 0.8%.

MC & masters Oh Yeon-seo (MC) Shin Hye-sung (Director) Lee Min-woo (Director) Jeon Bong-jin (Vocal Master) Ha Hwi-dong (Dance Master) Vasco (Rap Master) Yoo Jae-hwan (Special Vocal Master) Basick (Special Rap Master) Choi Young-joon (Special Dance Master)

Winners The winners of BOYS24 are Unit Yellow, Unit White, Unit Green, and Unit Sky. Unit Yellow were selected as the MVP team and were awarded 200 million won (approximately $171,220) of investment into their music production and unit activities promotion. Sangmin from Unit Sky withdrew from BOYS24 for personal reasons, which included health issues. Online votes were held to pick five contestants who were formerly eliminated on the show to replace Sangmin's position. The votes took place August 10–15 with the winners of the vote being announced on August 16. The five contestants with the highest votes were Jin Sungho, Jung Yeontae, Han Hyunuk, Kim Sunghyun, and Tak Jinkyu. Jin Sungho was added to Unit Green, Jung Yeontae was added to Unit Yellow, Kim Sunghyun was added to Unit White, Han Hyunuk and Tak Jinkyu were added to Unit Sky.

Episodes Guide

Episode and MissionUnit BlueUnit WhiteUnit PurpleUnit SkyUnit RedUnit GreenUnit Yellow1, 2 - Top 7 QualificationPerformed: Teen Top's Warning Sign <span style="background:red"> Eliminated: Giseok' </span>3Performed: EXO's "Call Me Baby" <span style="background:red"> Eliminated: Kyuhyun' </span>Performed: Beast's "Shock" <span style="background:red"> Eliminated: Gwanghyun' </span>Performed: SHINee's "Sherlock" <span style="background:red"> Eliminated: Yunsol' </span>Performed: BTS's "Dope" <span style="background:red"> Eliminated: Suhan' </span>Performed: Block B's "Very Good" <span style="background:red"> Eliminated: Hechan' </span>Performed: Infinite's "Be Mine" <span style="background:red"> Eliminated: Shin Jingyu' </span>4 - Mix & Match Song and Genre (1st group elimination)Performed: GFriend's "Rough" in traditional music genre Scored: 263Performed: Twice's "Cheer Up" in hip hop genre Scored: 259Performed: Sistar19's "Gone Not Around Any Longer" in acoustic genre Scored: 245 [Eliminated]Performed: Winner's "Sentimental" in acoustic genre Scored: 251

Note: Leader was changed from Yonghyun to SangminPerformed: GD X Taeyang's "Good Boy" in EDM genre. Scored: 249Performed: VIXX's "On and On" in musical genre Scored: 257Performed: Block B's "HER" in R&B genre Scored: 287

Note: Leader was changed from Jinseok to Louoon5 - Capture the Heart of Girls (2nd group elimination)Chose GOT7's "Just Right", but the song was swapped with Unit Sky's. Performed: TVXQ's "Mirotic"

Scored: 393 [Eliminated]Chose BTS's "I Need U", but the song was swapped with Unit Red's. Performed: 2PM's "10 Out of 10"

Scored: 394Chose TVXQ's "Mirotic", but the song was swapped with Unit Blue's. Performed: GOT7's "Just Right"

Scored: 447Received (because they were last place in the last challenge) 2PM's "10 Out of 10", but the song was swapped with Unit White's. Performed: BTS's "I Need U"

Scored: 398Chose SHINee's "Dream Girl", but the song was swapped with Unit Yellow's. Performed: Seventeen's Adore U

Scored: 417Chose Seventeen's Adore U, but the song was swapped with Unit Green's. Performed: SHINee's "Dream Girl"

Scored: 4306 (and 1st half of episode 7) - 1st Generation Idols' Hit Songs (Members' Revival)<span style="background:green"> Added into the group: Inho </span> Performed: Sechs Kies's "Com' Back"

<span style="background:red"> Eliminated: Junseo' </span><span style="background:green"> Added into the group: Insoo </span> Performed: H.O.T.'s "Candy"

<span style="background:red"> Eliminated: Insoo (Sangmin was picked by In Soo as candidate for elimination)' </span><span style="background:green"> Added into the group: Yeontae </span> Performed: 1TYM's "1tym"

<span style="background:red"> Eliminated: Won' </span><span style="background:green"> Added into the group: Hocheol </span> Performed: Shinhwa's "Brand New"

<span style="background:red"> Eliminated: Wooyoung' </span><span style="background:green"> Added into the group: Changmin </span> Performed: g.o.d's "Friday Night"

<span style="background:red"> Eliminated: David' </span>7 (2nd half of the episode) - Final's Pre-mission - Vocal, Rap, Performance Battle

8 - Final Performance battle [extra 24 points for final mission]Vocal representative: Doha Rap representative: Jinsub

Performed: Time Leap

Master 235 points + audience 611 points = 846 points

[BOYS 24]Vocal representative: Hwayoung Rap representative: Yonghyun

Performed: Bop

Master 294 points + audience 595 points + extra 24 points of Rap Representative = 913 points

[BOYS 24]Vocal representative: Yeontae Rap representative: Sungho

Performed: Starlight

Master 225 points + audience 610 points = 835 points

[Eliminated]Vocal representative: Inpyo Rap representative: Jihyeong

Performed: Candy Shop

Master 284 points + audience 583 points + extra 24 points of Vocal Representative = 891 points

[BOYS 24]Vocal representative: Seonghwan Rap representative: Changmin

Performed: Yolo

Master 304 points + audience 602 points + extra 24 points of Performance Representative = 930 points

[BOYS 24 MVP unit]

Episodes Ratings

Episode 1 : 2016.6.18 : TOP7 selection : n/a Episode 2 : 2016.6.25 : TOP7 chose Unit members and mission : 0.8%