Art by MiRA
- Unlocked by obtaining 120-130 stars on Solarsphere
- Expert difficulty unlocked at Sphere Level 22
- As of version 1.0.8d, UFD Expert was the highest-rated chart on Tone Sphere.
- In version 1.1.3 (The Crunch), UFD was re-rated to an 11, due to a high clear rate.
- This song was released as part of the MIXIM vol.3 DnB compilation album on STRLabel. The cover art of this song uses variants of the album cover.
- Available as a paid download on bandcamp.
- This song appears in Groove Coaster as a part of their Tone Sphere collaboration, which uses a different piece of art.