Tracks
| # | Title | Sung by | |
|---|---|---|---|
| 1 | 許婚っきゅん | ハロー、ハッピーワールド！ | 2:57 |
Member reviews
Source: MusicBrainz release group 63a40e97-b6fc-4b02-a39e-064435571500 (CC0). Cover: Cover Art Archive.
| # | Title | Sung by | |
|---|---|---|---|
| 1 | 許婚っきゅん | ハロー、ハッピーワールド！ | 2:57 |
Source: MusicBrainz release group 63a40e97-b6fc-4b02-a39e-064435571500 (CC0). Cover: Cover Art Archive.