Sevenus is a South Korean duo consisting of Heejae and Ireah under PCS Entertainment. Heejae and Ireah previously participated in the survival competition show Peak Time as two members of their former group, Masc.

After finishing in second place, it was announced on May 3, 2023, that they had signed an exclusive contract with PCS Entertainment to start fresh and re-debut as a duo. On May 9, 2023, the duo announced that they would change their name to Sevenus.

The beginning, “Seven,” holds special meaning for them because they were part of Team 7:00 during the show, and “US” signifies their connection with the fans.