- Intro : Satellite (Intro : 우린 어느 별에서 떨어져 둘이 됐을까?)
- Eclipse (달이 태양을 가릴 때) (Kihno only)
- mirror (Kihno only)
- ILJIDO (Kihno only)
- MOON MOVIE (Kihno only)
- Weird Day (낯선 날) (ft. Punch) (Kihno only)
- Snow (눈) (Kihno only)
- Absence (부재)
- Absence (부재) (Inst.)
- Moonbyul held an online concert for 門OON on VLive, titled Moonbyul 1st Ontact Live '門OON'. It was on May 30, at 7 p.m. (KST).
- The Morse code at the end of the first Ontact Live teaser means "I miss you".
- The romanization of the character "門" is "mun".
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