Starship Entertainment announced that their official debut was imminent by releasing the music video teaser for the title song 'Hmph!' of the first unit Chocome single album 'Hmph!' through WJSN's official SNS channel on October 4th.

In the released video, the members in the video short of about 23 seconds appeared as a lovely, wacky retro girl through the curtains and presented a different look. In particular, a variety of concepts from a unique retro hairstyle to a twinkle tutu (ballet) style candy girl, as well as a bouncing performance with an addictive retro melody, raised expectations for the main music video.