Share: Title:hongjoin - Serotonin (Official Music Video) Duration: 4:21 Plays: 9.3K views Published: 2 months ago Download MP3 Download MP4 Simillar Videos ▶️ 4:52 Hongjoin - Komorebi (official Music Video) 9.3K views • 5 months ago ▶️ 4:04 Hongjoin - Yesterday (lyric Video) 9.3K views • 7 days ago ▶️ 2:56 Hongjoin & Marian Carmel - Old Habits (official Lyric Video) 9.3K views • 1 year ago ▶️ 3:16 Hongjoin - Enough For Me (official Music Video) 9.3K views • 8 months ago