2015–present: Debut with Seventeen and solo activities
In 2015, Boo debuted with the South Korea boy band, Seventeen. Their debut EP 17 Carat was digitally released on May 29.
On March 14, 2018, a representative of tvN drama Mother revealed that Boo participated in the soundtrack of the series, with a song titled "Kind of Love". The song portrays a sorrowful love story with an acoustic sound.
On March 21, 2018, Boo, together with bandmates Hoshi and DK debuted as a subgroup called BSS, or BooSeokSoon, a common nickname for the three members together. The group released their debut single "Just Do It" and enjoyed a short promotional period.
Boo was cast in the talk show Unexpected Q in 2018. He was awarded the Rookie (Music and Talk) award at the 2018 MBC Entertainment Awards.
In 2019, Boo became a cast member for Prison Life of Fools, alongside Got7's JB, Jang Do-yeon, Jeong Hyeong-don and more. He was also cast in the talk show Five Cranky Brothers in 2019.
Boo participated in the soundtrack for tvN's Record of Youth. The song titled "Go" was released digitally on September 7, 2020.
On January 29, 2021, his soundtrack for Kakao TV's original drama Lovestruck in the City was released. "The Reason" is a song in which a calm piano melody perfectly harmonizes with Boo's sweet tone.
In 2021, Boo became a cast member for Channel S's "Job Dongsan", alongside Kang Ho-dong and Super Junior's Eunhyuk. Later he also became a cast member for TVING's "Idol Dictation Contest" and tvN's new badminton entertainment show "Racket Boys", alongside Olympic champion Oh Sang-uk, Jang Sung-kyu, Yang Se-chan and more.
In January 2022, Boo was awarded the "Male Idol Entertainer" award at the 2022 Korea First Brand Daesang.
Year Title Network Role Notes Ref.
2018 Unexpected Q MBC Cast member 
2019 Prison Life of Fools tvN 
Five Cranky Brothers JTBC 
2021 Job Dongsan (Job Estate) Channel S 
Racket Boys tvN Club member Episode 1–12 
Year Title Platform Role Notes Ref.
2021 Idol Dictation Contest TVING Cast member Season 1 
Main article: Seventeen discography
Title Year Peak chart position Sales
 KOR Hot
Kind Of Love 2018 — — N/A Mother (마더) OST Part 5
Go 2020 — — Record of Youth (청춘기록) OST Part 1
Reason 2021 — — Lovestruck in the City OST Part 6 
"—" denotes releases that did not chart or were not released in that region.
Awards and nominations
See also: List of awards and nominations received by Seventeen
Name of the award ceremony, year presented, category, nominee of the award, and the result of the nomination
Award ceremony Year Category Nominee / Work Result Ref.
Fandom School Awards 2018 Best OST Singer Mother (마더) OST Part 5 "Kind of Love" Won
MBC Entertainment Awards 2018 Rookie Award (Music and Talk) King of Mask Singer, Unexpected Q Won 
Korea First Brand Awards 2022 Male Idol Entertainer (Daesang) Boo Seung-kwan Won