{{MusicArticle
| titlejp     = 境界カレイドスコープ
| titlejprom  = Kyoukai Kareidosukoopu
| titleen     = Boundary Kaleidoscope
| group       = [[Gengaku Koubou]] & [[流派未階堂]] (Gengaku Koubou & Ryuuha Mikaido)
| groupCat    = Gengaku Koubou
| groupCat2   = Ryuuha Mikaido
| released    = 2014-05-11
| convention  = Reitaisai 11
| tracks      = 10
| length      = 43:58
| catalogno   = RGCD-0001
| genre       = {{Genre|Instrumental}}, {{Genre|Orchestral}}
| website     = [https://web.archive.org/web/20180419133058/http://www.mikaido.net/product/Kaleido.php Archived Website]
| digital     = 
| image       = RGCD-0001.png
| banner      = RGCD-0001_banner.png
| banner_res  = x60
| caption     = Portrayed: [[Maribel Hearn]] & [[Renko Usami]]
| arranger    = {{ルイージオ}}
: {{すみょ～ん}}
: {{狐狗狸}}
: {{エイジャ}}
: Stardust
: {{ぐんそう}}
: Presto
| lyricist    = 
| vocalist    = 
| producer    = 
| illustrator = {{lang|ja|ジョンディー}} [https://www.pixiv.net/en/users/1686747 Pixiv]
| masterer    = 
| other_staff = 
| description = It features instrumental arrangements of themes from ''[[Ghostly Field Club]]'', ''[[Retrospective 53 minutes]]'', ''[[Magical Astronomy]]'', ''[[Trojan Green Asteroid]]'' and ''[[Neo-traditionalism of Japan]]''.
| tracklist   =

*{{Track|01|Simulated reality|03:42}}
**arrangement: {{ルイージオ}}
**original title: {{lang|ja|少女秘封倶楽部}}
**source: {{GFC}}

*{{Track|02|{{lang|ja|電車旅}}|03:39}}
**''Train Trip''
**arrangement: {{すみょ～ん}}
**original title: {{lang|ja|ヒロシゲ}}36{{lang|ja|号　～}} Neo Super-Express
**source: {{R53m}}

*{{Track|03|Lost Odyssey{{lang|ja|～宙への憧憬～}}|04:22}}
**''Lost Odyssey ~Longing for Space~
**arrangement: {{狐狗狸}}
**original title: {{lang|ja|天鳥船神社の結界}}
**source: {{TGA}}

*{{Track|04|{{lang|ja|魔鏡}}|04:09}}
**''Magical Mirror''
**arrangement: {{エイジャ}}
**original title: {{lang|ja|魔術師メリー}}
**source: {{GFC}}

*{{Track|05|{{lang|ja|星空カフェテラス}}|03:31}}
**''Starry Sky Cafe Terrace''
**arrangement: stardust
**original title: {{lang|ja|衛星カフェテラス}}
**source: {{MA}}

*{{Track|06|{{lang|ja|不確定性原理と猫の夢}}|03:55}}
**''Uncertainty Principle and Cat's Dream''
**arrangement: {{狐狗狸}}
**original title: {{lang|ja|月の妖鳥、化猫の幻}}
**source: {{GFC}}

*{{Track|07|{{lang|ja|空と海の境界}}―The Horizon―|05:58}}
**''The Boundary of Sky and Sea -The Horizon-''
**arrangement: {{ぐんそう}}
**original title: {{lang|ja|最も澄みわたる空と海}}
**source: {{R53m}}

*{{Track|08|{{lang|ja|タイムパラドックス}}|04:09}}
**''Time Paradox''
**arrangement: {{狐狗狸}}
**original title: {{lang|ja|天空のグリニッジ}}
**source: {{MA}}

*{{Track|09|Sanatorium|03:58}}
**arrangement: Presto
**original title: {{lang|ja|緑のサナトリウム}}
**source: {{NtoJ}}

*{{Track|10|{{lang|ja|軌道上への自由落下}}|06:32}}
**''Free Fall to the Orbit''
**arrangement: {{ルイージオ}}
**original title: G Free
**source: {{MA}}
| notes       =
}}