Last month, rookie rock band LEDApple comprised of Jaehoon (vocal), Kyumin (vocal, rap), Youngjun (guitar), Kwangyeon (bass), and Hyosuk (drums) released the MV for "Who Do You Think You Are". Now, Startory Entertainment has released their 2nd music video, "Birthday Killer" from their 1st mini album on the official YouTube Channel. Check out the MV below!