Yoo Hee-jae

Yoo Hee-jae (born February 22, 1994) is a South Korean singer and actor. He debuted as a member of Masc on August 19, 2016, under JJ Holic Media and Lotus E&M. The group was subsequently disbanded on October 18, 2020. In 2023, Heejae participated in JTBC's reality competition show, Peak Time, as Team 7:00 with his former group member Ireah and achieved second place. In May 2023, Heejae and Ireah signed an exclusive contract with PCS Entertainment and started a new journey as a duo named Sevenus.

Early life and education
Heejae graduated from the Department of Drama and Film in Kaywon High School of Arts. While studying at the Theater and Film Department of Seoul Institute of the Arts, he starred in independent film I am a Vampire, which was directed by 26, a former member of Masc. Following this experience, Heejae began his career as an idol. During his college years, he joined a dance club to develop a new skill, which sparked his interest in combining dance and music.

2016–2022: Debut with Masc
On August 19, 2016, Heejae debuted as the lead vocalist of four-member idol group Masc with the EP Strange.

On October 18, 2020, the group disbanded.

Heejae enlisted for the mandatory service after Masc's disbandment, and was discharged in 2022.

2023: Peak Time and Sevenus
In 2023, Heejae participated in JTBC's survival reality show Peak Time as part of Team 7:00 alongside fellow group member, Ireah. They secured second place and embarked on the Peak Time Concert Tour as part of the Top 6.

On May 3, 2023, Heejae and Ireah signed an exclusive contract with PCS Entertainment and formed the duo Sevenus. They released their debut single album, Summús, on July 31, 2023.