K Project / Hard Creature / Gyeongseong Creature · 경성 크리처 Why Did You Come to My House · 사운드트랙#1 / 우리집에 왜 왔니 (Urijibe Wae Watni) Nemesis / My Name / Undercover · 네메시스 / 마이네임 / 언더커버
I Know But / Nevertheless · 알고있지만 (Algo issjiman) The World of the Married / Couple's World · 부부의 세계 100 Days My Prince / Hundred Days' Husband / Dear Husband of 100 Days / · 백일의 낭군님