A single release from August 2005. It was issued in a normal jewel case with an obi. As with most of their single releases, this single also had a non-album song as an additional track.

CD release

Cat. nbr.: Art Pop Records – APCRD-0501

Track listing:

1. 朧
2. 空

朧 was re-recorded for their 2008 album COLLECTION.

空 appeared in a remixed form on the bonus disc of Electric travel.