# BOL4

BOL4 (Korean: 볼빨간 사춘기; RR: Bolppalgan Sachungi), also known as Bolbbalgan4 or Blushing Youth (赤頬思春期, Akahō Shishunki), is a South Korean musical act formed by Shofar Music in 2016. They appeared on Superstar K6 in 2014 before signing a contract with their current agency. BOL4 was originally a duo consisting of Ahn Ji-young and Woo Ji-yoon. They debuted with the single "Fight Day" from the mini-album Red Ickle on April 22, 2016. The group's name in English comes from the first syllable of the Korean word [[wikt:사춘기|‹See RfD› sachungi]] ("puberty"), which is pronounced the same as the Sino-Korean numeral four ([[wikt:사#Etymology 1|‹See RfD› sa]]).
The duo went on a temporary hiatus due to Ahn's music classes requirements in the first half of 2018. BOL4 signed with King Records and debuted in Japan on June 5, 2019, with the mini-album Red Planet (Japan Edition).
On April 2, 2020, Shofar Music announced that Woo Ji-yoon had left the duo, and Ahn Ji-young will continue to promote as BOL4 as a solo act.

## Formation

Jiyoung and Jiyoon were both raised in Yeongju, North Gyeongsang Province, and were classmates. They had previously competed Superstar K 6 in 2014. Since they were young they had dreamed of becoming singers. The name of their duo was built on the grounds that they wanted to make the kind of pure, honest music that can only be found in adolescence. Jiyoon portrays the "blushing" part of the name because she is often shy, while Jiyoung portrays "youth" because she acts like an adolescent girl.

## Members
### Current

* Ahn Ji-young (안지영) – main vocals

### Former

* Woo Ji-yoon (우지윤) – guitar, rapping, backing vocals

## Discography
### Studio albums

| Title | Album details | Peak chart positions | Sales |
| Title | Album details | KOR | Sales |
| Red Planet | Released: August 29, 2016 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Galaxy" (우주를 줄게) "Fight Day" (싸운날) "You (=I)" "Grumpy" (심술) "Hard to Love" (나만 안되는 연애) "Chocolate" (초콜릿) "Freesia" (프리지아) "X Song" "Ring" (반지) "When You Fall in Love" (사랑에 빠졌을 때) | 15 | KOR: 25,646 |

### Extended plays

| Title | EP details | Peak chart positions | Peak chart positions | Peak chart positions | Peak chart positions | Sales |
| Title | EP details | KOR | JPN | JPN Hot | US World | Sales |
| Korean |||||||
| Red Ickle | Released: April 22, 2016 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Chocolate" (초콜릿) "Fight Day" (싸운날) "Ring" (반지) "Grumpy" (심술) "Occasionally" (가끔씩) | 30 | — | — | — | KOR: 659 |
| Red Diary Page.1 | Released: September 28, 2017 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Some" (썸탈꺼야) "Blue" "Fix Me" (고쳐주세요) "Imagine" (상상) "To My Youth" (나의 사춘기에게) | 7 | — | — | 9 | KOR: 13,277 |
| Red Diary Page.2 | Released: May 25, 2018 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Wind" (바람사람) "Travel" (여행) "Starlight" (야경) "Dear. Teddy Bear" (안녕, 곰인형) "Clip" "Lonely" | 5 | — | — | — | KOR: 8,375 |
| Puberty Book I Bom | Released: April 2, 2019 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Picnic" (나들이 갈까) "Bom" (나만, 봄) "Stars Over Me" (별 보러 갈래?) "Seattle Alone" "Mermaid" | 16 | — | — | — | KOR: 5,689 |
| Two Five | Released: September 10, 2019 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Workaholic" (워커홀릭) "25" "XX" "Taste" "Day Off" (낮(Day off)) "XX" (acoustic ver.) | 6 | — | — | — | KOR: 5,162 |
| Puberty Book II Pum | Released: May 13, 2020 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Blank" (빈칸을 채워주시오) "Hug" (품) "Leo" (나비와 고양이) (feat. Baekhyun of Exo) "Counseling" (카운슬링) "Dandelion" (민들레) | 8 | — | — | — | KOR: 5,536 |
| Seoul | Released: April 20, 2022 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Love Story" "Seoul" "What Makes Us Beautiful" (이름디운 건) "In the Mirror" "Star" (별) | 26 | — | — | — | |
| Love.zip (사랑.zip) | Released: April 16, 2023 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Chase Love Hard" (featuring Hwang Min-hyun) "Friend the End" "Rome" "When Love Becomes Goodbye" (사랑이 이별이 돼 가는 모습이) "Good Night" (좋은 꿈 꿔 0224.mp3) | 42 | — | — | — | KOR: 5,074 |
| Merry Go Round | Released: December 12, 2023 Label: Shofar Music Formats: CD, digital download, streaming Track listing "Goodbye My Love" "Snowball" (스노우볼) "Eternal Love" (사랑할 수밖에) "Miss U, Dear" "Love" | 22 | — | — | — | KOR: 3,788 |
| Japanese |||||||
| Red Planet (Japan Edition) | Released: June 5, 2019 Label: King Records Formats: CD, digital download, streaming Track listing "Galaxy" (宇宙をあげる) "好きだと言って" "喧嘩した日" "You (=I)" "Grumpy" (意地悪) "私だけダメな恋" | — | 41 | 63 | — | JPN: 1,130 |
| "—" denotes releases that did not chart or were not released in that region. |||||||

### Singles
#### As lead artist

| Title | Year | Peak chart positions | Peak chart positions | Peak chart positions | Sales | Certifications | Album |
| Title | Year | KOR | KOR Songs | JPN | Sales | Certifications | Album |
| Korean ||||||||
| "Fight Day" (싸운날) | 2016 | — | * | — | KOR: 16,260 | — | Red Ickle |
| "Galaxy" (우주를 줄게) | 2016 | 2 | 36 | — | KOR: 2,716,160 | — | Red Planet |
| "Hard to Love" (나만 안되는 연애) | 2016 | 12 | 46 | — | KOR: 2,500,000 | — | Red Planet |
| "Tell Me You Love Me" (좋다고 말해) | 2016 | 2 | 19 | — | KOR: 2,500,000 | — | Red Planet |
| "Some" (썸 탈꺼야) | 2017 | 1 | 1 | — | KOR: 2,500,000 | — | Red Diary Page.1 |
| "To My Youth" (나의 사춘기에게) | 2017 | 3 | 2 | — | KOR: 2,500,000 | — | Red Diary Page.1 |
| "#First Love" (#첫사랑) | 2018 | 2 | 2 | — | — | — | Non-album single |
| "Travel" (여행) | 2018 | 1 | 1 | — | KOR: 2,500,000 | KMCA: Platinum | Red Diary Page.2 |
| "Wind" (바람사람) | 2018 | 20 | 36 | — | — | — | Red Diary Page.2 |
| "Dejavu" | 2018 | 21 | 30 | — | — | — | Red Diary 'Hidden Track' |
| "Bom" (나만, 봄) | 2019 | 1 | 4 | — | — | KMCA: Platinum | Puberty Book I Bom |
| "Stars Over Me" (별 보러 갈래?) | 2019 | 4 | 10 | — | — | — | Puberty Book I Bom |
| "Mermaid" | 2019 | 22 | 30 | — | — | — | Puberty Book I Bom |
| "Workaholic" (워커홀릭) | 2019 | 1 | 2 | — | — | — | Two Five |
| "Leo" (나비와 고양이) (featuring Baekhyun) | 2020 | 2 | 3 | — | — | — | Puberty Book II Pum |
| "Hug" (품) | 2020 | 30 | 19 | — | — | — | Puberty Book II Pum |
| "Atlantis Princess" (아틀란티스 소녀) | 2020 | 36 | 26 | — | — | — | Our Beloved BoA #2 – SM Station |
| "Dancing Cartoon" | 2020 | 49 | — | — | — | — | Filmlet |
| "Butterfly Effect" (나비효과) | 2021 | 23 | 37 | — | — | — | Butterfly Effect |
| "Space" (너는 내 세상이었어) | 2021 | 32 | 14 | — | — | — | Butterfly Effect |
| "Seoul" | 2022 | 18 | 99 | — | — | — | Seoul |
| "Friend the End" | 2023 | 15 | — | — | — | — | Love.zip |
| "Chase Love Hard" (featuring Hwang Min-hyun) | 2023 | 36 | — | — | — | — | Love.zip |
| "Someday" (여름날) (featuring Ha Hyun-sang) | 2023 | 84 | — | — | — | — | Non-album single |
| "Snowball" (스노우볼) | 2023 | 76 | — | — | — | — | Merry Go Round |
| "Lips" (featuring Giselle) | 2024 | 102 | — | — | — | — | Non-album singles |
| "Bloom" | 2024 | 110 | — | — | — | — | Non-album singles |
| Japanese ||||||||
| "Uchū o Ageru" (宇宙をあげる) | 2019 | — | — | — | — | — | Red Planet (Japan Edition) |
| "Watashi no Shishunki e" (私の思春期へ) | 2019 | — | — | — | — | — | Non-album singles |
| "Some" | 2019 | — | — | — | — | — | Non-album singles |
| "Love" | 2020 | — | — | 48 | JPN: 720 (Phy.) | — | Non-album singles |
| "Watashi dake, Haru" (私だけ、春) | 2020 | — | — | — | — | — | Non-album singles |
| "—" denotes releases that did not chart or were not released in that region. ||||||||

#### Collaborations

| Title | Year | Peak chart positions | Peak chart positions | Sales | Album |
| Title | Year | KOR | KOR Hot | Sales | Album |
| "Romantic Wish" (with Sweden Laundry, Vanilla Acoustic, Kim Ji-soo, Kim Sa-rang, 20 Years Of Age and Letter Flow) | 2016 | — | — | — | Non-album singles |
| "We Loved" (남이 될 수 있을까) (with 20 Years of Age) | 2017 | 1 | 4 | KOR: 2,500,000 | Non-album singles |
| "New York" (with WH3N) | 2019 | 107 | — | — | Non-album singles |
| "Awkward" (어색한 사이) (with Vanilla Acoustic, Sweden Laundry, 20 Years of Age, Letter Flow, Kim Ji-soo, WH3N, Boramiyu, Choi Yuri) | 2020 | 116 | — | — | Non-album singles |
| "—" denotes releases that did not chart or were not released in that region. ||||||

#### As featured artist

| Title | Year | Peak chart positions | Peak chart positions | Sales | Album |
| Title | Year | KOR | KOR Hot | Sales | Album |
| "Lost Without You" (우리집을 못 찾겠군요) (Mad Clown feat. Bolbbalgan4) | 2017 | 5 | 77 | KOR: 1,012,764 | Love Is a Dog from Hell |
| "Mohae" (모해) (San E feat. Bolbbalgan4) | 2017 | 5 | 23 | KOR: 260,140 | Non-album singles |
| "Hurry Up" (Sohee feat. BOL4) | 2018 | — | — | — | Non-album singles |
| "Be Your Christmas" (Sweden Laundry feat. BOL4) | 2018 | — | — | — | Be Your Christmas |
| "—" denotes releases that did not chart or were not released in that region. ||||||

### Soundtrack appearances

| Title | Year | Peak chart positions | Peak chart positions | Sales | Album |
| Title | Year | KOR | KOR Hot | Sales | Album |
| "Hidden Path" (가리워진 길) | 2014 | 60 | — | KOR: 55,979 | Misaeng OST Part 4 |
| "Dream" (드림) | 2016 | 54 | — | KOR: 47,657 | Hwarang OST Part 3 |
| "Hello" | 2016 | — | — | — | Lost Tale Mobile Game OST |
| "You and I From the Beginning" (처음부터 너와 나) | 2017 | 3 | 10 | KOR: 2,500,000 | The Emperor: Owner of the Mask OST Part 2 |
| "My Trouble" | 2018 | 48 | 52 | — | Why: The Real Reason You Got Dumped OST Part 1 |
| "Love Letter" | 2020 | 95 | — | — | Start-Up OST Part 12 |
| "—" denotes releases that did not chart or were not released in that region. ||||||

### Other charted songs

| Title | Year | Peak chart positions | Peak chart positions | Sales | Album |
| Title | Year | KOR | KOR Hot | Sales | Album |
| "Grumpy" (심술) (Red Ickle version) | 2016 | 38 | 94 | KOR: 1,052,943 | Red Ickle |
| "You(=I)" | 2016 | 40 | 74 | KOR: 1,371,749 | Red Planet |
| "When You Fall in Love" (사랑에 빠졌을 때) | 2016 | 78 | — | KOR: 66,307 | Red Planet |
| "Grumpy" (심술) (Red Planet version) | 2016 | 83 | — | KOR: 69,098 | Red Planet |
| "Blue" | 2017 | 5 | 7 | KOR: 757,087 | Red Diary Page.1 |
| "Fix Me" (고쳐주세요) | 2017 | 11 | 11 | KOR: 467,335 | Red Diary Page.1 |
| "Imagine" (상상) | 2017 | 12 | 12 | KOR: 399,631 | Red Diary Page.1 |
| "Lonely" | 2018 | 24 | 40 | — | Red Diary Page.2 |
| "Starlight" (야경) | 2018 | 34 | 43 | — | Red Diary Page.2 |
| "Dear, Teddy Bear" (안녕, 곰인형) | 2018 | 42 | 52 | — | Red Diary Page.2 |
| "Clip" | 2018 | 65 | 66 | — | Red Diary Page.2 |
| "6 o'clock" | 2018 | 80 | 84 | — | Red Diary 'Hidden Track' |
| "Picnic" (나들이 갈까) | 2019 | 31 | 39 | — | Puberty Book I Bom |
| "Seattle Alone" | 2019 | 43 | 49 | — | Puberty Book I Bom |
| "25" | 2019 | 33 | — | — | Two Five |
| "XX" | 2019 | 30 | — | — | Two Five |
| "Taste" | 2019 | 50 | — | — | Two Five |
| "Day Off" (낮) | 2019 | 59 | — | — | Two Five |
| "XX" (acoustic version) | 2019 | 117 | — | — | Two Five |
| "Blank" (빈칸을 채워주시오) | 2020 | 108 | — | — | Puberty Book II Pum |
| "Dandelion" (민들레) | 2020 | 143 | — | — | Puberty Book II Pum |
| "Counseling" (카운슬링) | 2020 | 164 | — | — | Puberty Book II Pum |
| "Red Lipstick" (빨간 립스틱) | 2020 | 31 | — | — | Filmlet |
| "Love Story" | 2022 | 16 | — | — | Seoul |
| "What Makes Us Beautiful" (아름다운 건) | 2022 | 187 | — | — | Seoul |
| "Star" (별) | 2022 | 186 | — | — | Seoul |
| "Rome" | 2023 | 158 | — | — | Love.zip |
| "When Love Becomes Goodbye" (사랑이 이별이 돼 가는 모습이) | 2023 | 77 | — | — | Love.zip |
| "Good Night" (좋은 꿈 꿔 0224.mp3) | 2023 | 180 | — | — | Love.zip |
| "Eternal Love" (사랑할 수밖에) | 2023 | 33 | — | — | Merry Go Round |

## Concert and tours
### Headlining concerts and tours

* BOL4 1st Solo Concert "Red Planet" (2016)
* BOL4 1st Concert in Taipei (2017)
* BOL4 2nd Solo Concert "Imagine" (2017-2018)
* BOL4 3rd Solo Concert "Travel" (2018)
* 2019 BOL4 Spring Solo Concert "Flower Energy" (2019)
* 2019 BOL4 Asia Tour "Blossom" (2019)
* 2019 BOL4 Tour Concert "Two Five" (2019)
* BOL4 (赤頬思春期) Japan Live Tour 2020 "Love" (2020)
* BOL4 Concert "Seoul" (2022)
* 2023 BOL4 Concert in Taipei (2023)
* BOL4 Concert "Love.zip" (2023)
* 2023 BOL4 Asia Tour "Love.zip" (2023)
* 2024 BOL4 Concert "Bloom" (2024)
* 2025 BOL4 Asia Tour "Bloom" (2025)

#### BOL4 1st Solo Concert "Red Planet" (2016)

| Concert | Date | City | Country | Venue |
| Red Planet No. B41120 | November 20, 2016 | Seoul | South Korea | Baekam Art Hall |
| Red Planet No. B4120304 | December 3, 2016 | Seoul | South Korea | Ewha Womans University (Samsung Hall) |
| Red Planet No. B4120304 | December 4, 2016 | Seoul | South Korea | Ewha Womans University (Samsung Hall) |

#### BOL4 1st Concert in Taipei (2017)

| Date | City | Country | Venue | Attendance |
| September 9, 2017 | Taipei | Taiwan | Legacy Taipei | 2,300 |

#### BOL4 2nd Solo Concert "Imagine" (2017-2018)

| Date | City | Country | Venue | Attendance |
| December 16, 2017 | Seoul | South Korea | Blue Square iMarket Hall | 6,500 |
| December 17, 2017 | Seoul | South Korea | Blue Square iMarket Hall | 6,500 |
| December 31, 2017 | Busan | South Korea | Sohyang Theatre Shinhan Card Hall | 6,500 |
| February 3, 2018 | Hong Kong | Hong Kong | KITEC (Rotunda 3) | 1,500 |
| Total | Total | Total | Total | 8,000 |

#### BOL4 3rd Solo Concert "Travel" (2018)

| Date | City | Country | Venue | Attendance |
| 2018 BOL4 2nd Concert in Taipei "Travel Together" |||||
| June 30, 2018 | Taipei | Taiwan | Taipei International Convention Center | 3,000 |
| 2018 BOL4 3rd Solo Concert "Travel" |||||
| July 14, 2018 | Seoul | South Korea | Olympic Hall | 6,000 |
| July 15, 2018 | Seoul | South Korea | Olympic Hall | 6,000 |
| 2018 BOL4 (赤頬思春期) 1st Concert in Japan -旅- |||||
| August 8, 2018 (2 parts) | Tokyo | Japan | Toyosu PIT | 2,500 |
| Total | Total | Total | Total | 11,500 |

#### 2019 BOL4 Asia Tour "Blossom"

| Date | City | Country | Venue |
| 2019 BOL4 Spring Solo Concert "Flower Energy" ||||
| May 4, 2019 | Seoul | South Korea | Blue Square iMarket Hall |
| May 5, 2019 | Seoul | South Korea | Blue Square iMarket Hall |
| 2019 BOL4 (赤頬思春期) Japan Premium Showcase ||||
| June 6, 2019 | Osaka | Japan | Banana Hall |
| June 8, 2019 | Tokyo | Japan | TSUTAYA O-East |
| 2019 BOL4 Asia Tour "Blossom" ||||
| June 15, 2019 | Hong Kong | Hong Kong | KITEC (Star Hall) |
| July 13, 2019 | Bangkok | Thailand | Moonstar Studio 8 |
| November 9, 2019 | Taipei | Taiwan | National Taiwan University Sports Center 1 |

#### 2019 BOL4 Tour Concert "Two Five"

| Date | City | Country | Venue |
| November 30, 2019 | Busan | South Korea | Sohyang Theatre Shinhan Card Hall |
| December 1, 2019 | Busan | South Korea | Sohyang Theatre Shinhan Card Hall |
| December 7, 2019 | Daegu | South Korea | EXCO (Auditorium) |
| December 8, 2019 | Daegu | South Korea | EXCO (Auditorium) |
| December 14, 2019 | Daejeon | South Korea | Woosong University (Art Hall) |
| December 15, 2019 | Daejeon | South Korea | Woosong University (Art Hall) |
| December 21, 2019 | Gwangju | South Korea | Chosun University (Sunup Hall Auditorium) |
| December 22, 2019 | Gwangju | South Korea | Chosun University (Sunup Hall Auditorium) |
| December 28, 2019 | Seoul | South Korea | Ewha Womans University (Grand Hall) |
| December 29, 2019 | Seoul | South Korea | Ewha Womans University (Grand Hall) |

#### BOL4 (赤頬思春期) Live Tour 2020 "Love"

| Date | City | Country | Venue |
| January 16, 2020 | Osaka | Japan | Zepp Namba |
| January 18, 2020 | Tokyo | Japan | Toyosu PIT |

#### BOL4 Concert "Seoul" (2022)

| Date | City | Country | Venue |
| May 14, 2022 | Seoul | South Korea | Olympic Hall |
| May 15, 2022 | Seoul | South Korea | Olympic Hall |

#### 2023 BOL4 Asia Tour "Love.zip"

| Date | City | Country | Venue |
| 2023 BOL4 Concert in Taipei ||||
| April 15, 2023 | Taipei | Taiwan | TICC |
| BOL4 Concert "Love.zip" ||||
| April 29, 2023 | Seoul | South Korea | Olympic Hall |
| April 30, 2023 | Seoul | South Korea | Olympic Hall |
| 2023 BOL4 Asia Tour "Love.zip" ||||
| August 19, 2023 | Macau | Macau | Broadway Theatre |
| August 31, 2023 | Tokyo | Japan | Tachikawa Stage Garden |
| September 9, 2023 | Jakarta | Indonesia | Balai Sarbini |
| September 10, 2023 | Singapore | Singapore | The Theatre at Mediacorp |
| September 30, 2023 | Taipei | Taiwan | TICC |

### Showcase

* BOL4 (赤頬思春期) 1st Live Showcase 宇宙をあげる～ (2018)

## Videography
### Music videos

| Year | Title | Album | Director |
| 2016 | "Fight Day" (싸운날) | Red Ickle | Zanybros |
| 2016 | "Galaxy" (우주를 줄게) | Red Planet | BTS Film |
| 2016 | "Hard to Love" (나만 안되는 연애) | Red Planet | Zanybros |
| 2016 | "Tell Me You Love Me" (좋다고 말해) | Non-album singles | VFAR |
| 2017 | "We Loved" (남이 될 수 있을까) with 20 Years of Age | Non-album singles | BTS Film |
| 2017 | "Blue" | Red Diary Page.1 | Aloha Man |
| 2017 | "Imagine" (상상) | Red Diary Page.1 | Aloha Man |
| 2017 | "Some" (썸 탈꺼야) | Red Diary Page.1 | Mustache Film |
| 2017 | "Fix Me" (고쳐주세요) | Red Diary Page.1 | Un­known |
| 2018 | "Travel" (여행) | Red Diary Page.2 | Zanybros |
| 2018 | "Starlight (야경) | Red Diary Page.2 | Zanybros |
| 2018 | "Wind" (바람사람) | Red Diary Page.2 | Zanybros |
| 2019 | "Bom" (나만, 봄) | Puberty Book I Bom | Un­known |
| 2019 | "Stars Over Me" (별 보러 갈래?) | Puberty Book I Bom | Kyle |
| 2019 | "Galaxy" (宇宙をあげる) | Red Planet (Japan Edition) | Un­known |
| 2019 | "To My Youth" (私の思春期へ) | Non-album single | SEP,inc. |
| 2019 | "Workaholic" (워커홀릭) | Two Five | Zanybros |
| 2019 | "25" | Two Five | Zanybros |
| 2020 | "Love" | Non-album single | Zanybros |
| 2020 | "Leo" feat. Baekhyun (나비와 고양이) | Puberty Book II Pum | Un­known |
| 2020 | "Hug" (품) | Puberty Book II Pum | Un­known |
| 2020 | "Red Lipstick" (빨간 립스틱) | Filmlet | Un­known |
| 2020 | "Dancing Cartoon" | Filmlet | Zanybros |
| 2021 | "Butterfly Effect" (나비효과) | Butterfly Effect | Un­known |
| 2021 | "Space" (너는 내 세상이었어) | Butterfly Effect | Un­known |
| 2022 | "Seoul" | Seoul | Un­known |
| 2023 | "Friend the End" | Love.zip | Un­known |
| 2023 | "Snowball" (스노우볼) | Merry Go Round | Un­known |
| 2023 | "Eternal love" (사랑할 수밖에) | Merry Go Round | Un­known |
| 2024 | "Lips" (featuring Giselle) | Non-album singles | Un­known |
| 2024 | "Bloom" | Non-album singles | Novv Kim (Novv) |

## Filmography
### Television shows

| Year | Title | Network | Role | Notes/ Ref. |
| 2014 | Superstar K 6 | Mnet | Contestant | |
| 2017 | My Little Television | MBC | Cast | On Episode 84 & 85 |