A teaser video for the single "Let's be happy" was released on Ha Min Woo's official SNS channel at noon on Oct. 20.

The teaser released shows a romantic scene in which a real couple appears as the main characters, singing Ha Min Woo's "Let's Be Happy," and proposing, which is touching.

In particular, Ha Min Woo's sweet and sweet voice not only enhances the affectionate atmosphere, but also says, 'I'll protect you like this. The lyrics of "Let's be happy. Let's be happy. Forever" even raises expectations for a new song to be unveiled.

Ha Min Woo's "Let's be happy" will be released on various music sites at noon on October 23.