• "HURRY UP" : 1st mini album
  • It's time,24K
  • Secret Love
  • WoA!
• Prior to their debut, there was a subunit formed 4K and their sound was acoustic pop. The subunit consisted of that consisted of kisu, cory, sungoh, and seokjun.

release date: september 6th 2012

• U R So Cute : 2nd mini album
  • dance version
  • their only cute concept! this title track features a hard guitar sound mixed with a european style house beat

release date: july 31st 2013