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- Happy Moment
- Gijeog Gateun Ai (Miracle) (기적 같은 아이)
- Mr. BADBOY
- Pongdang Pongdang (Plop Plop) (퐁당퐁당)
- Follow Me
- Jigeum Mannareo Gayo (Closer to you) (지금 만나러 가요)
Happy Moment is the first full-length album released by WJSN. The song "HAPPY" was used as the lead track.