Staro Entertainment‘s new boy group Seven O’Clock have recently made their debut!

The group officially debuted with the music video for “Echo” on the 15th of March. They have released their first mini album titled ‘Butterfly Effect‘, which consists of 5 tracks on total. Their leader, A-Day, composed wrote the lyrics for one of the tracks, “Time Machine“!

The new group consists of the following members: A-Day, Taeyoung, Vaan, Younghoon, Junggyu and Hyun! They’re 1996 to 1999 liners!

The boys have made a seriously impressive debut with “Echo“, and the music video was really well filmed too!

Check it out above! You don’t want to miss out on SOC!