{{MusicArticle
| titlejp     = 秘封倶楽部の午後
| titlejprom  = Hifuu kurabu no gogo
| titleen     = Ghostly Field Club's Afternoon
| group       = [[Iroha-ya]]
| groupCat    = Iroha-ya
| released    = 2012-05-27
| convention  = Reitaisai 9
| tracks      = 7
| length      = 01:00:58
| catalogno   = 25:56
| genre       = {{Genre|Instrumental}}, {{Genre|Acoustic}}
| website     = [http://www.iroha-ya.info/works/iroh0001/ Link]
| digital     = [https://play.google.com/store/music/album?id=Bxhqfj4bd72bloba2xo6br6sv3a Google Play], [https://music.apple.com/album/ghostly-field-club-in-the-afternoon-ep/1480826841 iTunes]
| image       = IROH-0001.jpg
| banner      = IROH-0001_banner.jpg
| banner_res  = x60
| caption     = Portrayed: [[Renko Usami]] & [[Maribel Hearn]]
| arranger    = {{～蒼～}}
| lyricist    = 
| vocalist    = 
| producer    = 
| illustrator = {{～蒼～}}
| designer    = {{～蒼～}}
| masterer    = {{～蒼～}}
| other_staff = 
; Illustration (Jacket P2&3)
:{{lang|ja|くおん}} ([http://pixiv.net/member.php?id=309471 pixiv])
| description = It features instrumental arrangements of themes from ''[[Ghostly Field Club]]'', ''[[Changeability of Strange Dream]]'', ''[[Retrospective 53 minutes]]'' and ''[[Magical Astronomy]]''·
| tracklist   =

*{{Track|01|{{lang|ja|ふたり}}|03:58}}
**''The Twosome''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|少女秘封倶楽部}}
**source: {{GFC}}

*{{Track|02|{{lang|ja|月面の裏側}}|03:27}}
**''Behind of Lunar''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|月面ツアーへようこそ}}
**source: {{MA}}

*{{Track|03|{{lang|ja|眠る天文時計}}({{lang|ja|グリニッジ}})|03:52}}
**''Sleeping Greenwich''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|天空のグリニッジ}}
**source: {{MA}}

*{{Track|04|{{lang|ja|踊る幻想機械}}({{lang|ja|ファンタズマ}})|02:10}}
**''Dancing Fantasma''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|幻想機械　～}} Phantom Factory
**source: {{CoSD}}

*{{Track|05|{{lang|ja|深海の呼声}}|02:46}}
**''Call of Abyssal''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|53ミニッツの青い海}}
**source: {{R53m}}

*{{Track|06|{{lang|ja|まつり}}|04:54}}
**''The Festival''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|童祭　～}} Innocent Treasures
**source: {{CoSD}}

*{{Track|07|{{lang|ja|結界}}|04:47}}
**''Barrier''
**arrangement: {{～蒼～}}
**original title: {{lang|ja|童祭　～}} Innocent Treasures
**source: {{CoSD}}

}}