Ha Sung Woon is a South Korean singer-songwriter, dancer, musical actor and former member of HOTSHOT (핫샷) and WANNA ONE (워너원). He graduated from Baeksin High School and later obtained an associate's degree in K-Pop from Dong-Ah Broadcasting Arts University. He made his debut in October 2014 as HOTSHOT's main vocalist with their digital single, "Take A Shot". The group was able to release a few digital singles and also debuted in Japan in June 2016. In mid-2017, he participated in the survival competition "Produce 101 Season 2" and managed to end up in 11th place, earning a spot in the resulting project group. He later signed with Swing Entertainment (스윙엔터테인먼트) and re-debuted in August 2017 as WANNA ONE's main vocalist with their first mini-album, "1X1=1 (To Be One)". The contract was made for one year and six months, so the group officially disbanded in January 2019 following their final concert performance. After returning to his agency, Star Crew Entertainment (스타크루엔터테인먼트; previously known as K.O. Sound and also as Ardor & Able), he continued promoting as part of HOTSHOT and also made his solo debut with the mini-album, "My Moment" in February 2019. The group was not promoting as much, and in March 2021, all the members decided not to renew their contracts, effectively disbanding it. He briefly reunited with other WANNA ONE members in December 2021 to perform a special stage at the Mnet Asian Music Awards and in January 2022 they released the single album, "B-Side", to officially conclude their activities. He then signed with his current agency, BPM Entertainment (빅플래닛메이드, also known as Big Planet Made). He enlisted for his mandatory military service on October 24, 2022, as an active-duty soldier and was discharged on April 23, 2024. After his discharge, he returned with the mini-album, "Blessed" and has also began perfo Watch drama online for free.