- Digital Single
- Hwarang OST Part.6 (화랑; Flower Knight)
- Deulim (드림; Dream)
- Deulim (드림; Dream) (Instrumental)
Hwarang OST Part.6 is the third digital single released by Bolbbalgan4. The song "Deulim" was used as part of the soundtrack for the drama Hwarang.