행복
- Red Velvet, Happiness, Music Video Teaser 2014.08.24
- Red Velvet, Happiness, Teaser Site Background Image 2014.08.24
- Red Velvet, Happiness, Logo 2014.08.24
- Red Velvet, Happiness, Site Background Image 2014.08.22
- Red Velvet, Happiness, Album Art 2014.08.21
- Red Velvet, Happiness, Teaser 2014.08.21