366 Days (366일) (With Hyojung & Hyojin) ko
Dark Tales ko
For Couples Who Just Met (시작되는 연인들을 위해) (Feat. Kang Min Kyung) ko
Here I Am ko
I Feel You (만져져) ko
I Miss You (With CookieBox) ko
It’s Alright (가끔은 그렇게 웃어도 돼) (Prod. 캡틴플래닛) (With Ahn Se Ha) ko
I’m Fine (괜찮아요) ko
Lazy Me (게으른 나) ko
Lingering Inside Me (내 안에 맴돌아) ko
Lonesome Diary (어른 일기) ko
Love, Always You (Duet. 공찬 (Gongchan)) ko
More Than Words ko
Oblique Line (사선 (斜線)) ko
One Fine Day (날씨 좋은 날) ko
One More Step (한 걸음만 더) ko
Other World ko
Raindrop (빗소리) ko
Slightly Tipsy (취기를 빌려) (She is My Type♡ X Sandeul) ko
Smile Box (작은 상자) ko
Stay As You Are (그렇게 있어 줘) ko
Summer Day Summer Night (여름날 여름밤) ko
Tell Me ko
The Image of You (Remains in My Memory) (내 기억 속에 남아 있는 그대 모습은) ko
The One and Only You (The Moon During the Day) (그대 한 사람 (낮에 뜨는 달 X 산들)) ko
This Love (이 사랑) ko
You’re Leaving Like The Season (너는 계절처럼 멀어져 가네) ko
너에게 닿기를 ko