Tracks
| # | Title | Sung by | |
|---|---|---|---|
| 1 | 懐かしい宇宙 | 新居昭乃 | 5:07 |
| 2 | 虹色の惑星 | 新居昭乃 | 4:30 |
| 3 | Airplane | 新居昭乃 | 4:12 |
| 4 | 懐かしい宇宙（without akino） | 新居昭乃 | 5:04 |
Member reviews
Source: MusicBrainz release group d64394fb-36ba-35f5-b3e9-07b272e00a81 (CC0). Cover: Cover Art Archive.
| # | Title | Sung by | |
|---|---|---|---|
| 1 | 懐かしい宇宙 | 新居昭乃 | 5:07 |
| 2 | 虹色の惑星 | 新居昭乃 | 4:30 |
| 3 | Airplane | 新居昭乃 | 4:12 |
| 4 | 懐かしい宇宙（without akino） | 新居昭乃 | 5:04 |
Source: MusicBrainz release group d64394fb-36ba-35f5-b3e9-07b272e00a81 (CC0). Cover: Cover Art Archive.