{{MusicArticle
| titlejp     =東方紅輝心 ～Original Soundtrack～
| titlejprom  =Touhou Koukishin ～Original Soundtrack～
| titleen     =Touhou Scarlet Curiosity ～Original Soundtrack～
| group       =[[Hachimitsu-Lemon]]
| groupCat    =Hachimitsu-Lemon
| released    =2014-08-16
| convention  =Comiket 86
| tracks      =* Disc 1 = 14
* Disc 2 = 17
* Total = 31
| length      =* Disc 1 = 52:48
* Disc 2 = 1:07:43
*Total = 2:00:31
| catalogno   =
| genre       =
| website     =[http://8lemo.com/products/koukishin-ost/ Link]
| image       =Touhou Koukishin OST.jpg
| banner      =
| arranger    ={{あいざわ}}
| lyricist    =
| vocalist    =
| producer    =
| illustrator ={{lang|ja|[http://matsukitchiworks.tumblr.com/ 松吉]}}
| designer    =
| masterer    =
| other_staff =
| description =It is the original soundtrack of the game [[Touhou Koukishin]]. It featuring instrumental arrangements of themes from from ''[[Highly Responsive to Prayers]]'', ''[[Mystic Square]]'', ''[[Embodiment of Scarlet Devil]]'', ''[[Immaterial and Missing Power]]'', ''[[Imperishable Night]]'', ''[[Mountain of Faith]]'', ''[[Subterranean Animism]]'', ''[[Touhou Hisoutensoku]]'', ''[[Fairy Wars]]'', ''[[Double Dealing Character]]'', ''[[Changeability of Strange Dream]]'', ''[[Touhou Unreal Mahjong]]'', ''[[Strange and Bright Nature Deity]]'' and ''[[Neo-traditionalism of Japan]]''.
| tracklist   =
===Disc 1===
* {{Track|01|{{lang|ja|紅輝心}}|2:18|}}
** ''Adventures of Scarlet Curiosity''
** original title: Peaceful Romancer
** source: {{MS}}<!--
** original title: {{lang|ja|メインテーマ}}
** source: {{SA}}-->

* {{Track|02|{{lang|ja|深紅の残光}}|5:20|}}
** ''Crimson Afterglow''
** original title: {{lang|ja|亡き王女の為のセプテット}}
** source: {{EoSD}}

* {{Track|03|{{lang|ja|霧の先に待つものは}}|3:47|}}
** ''Those Beyond the Fog''
** original title: {{lang|ja|ミストレイク}}
** source: {{DDC}}

* {{Track|04|{{lang|ja|光の三妖精、参上！}}|3:47|}}
** ''The Three Fairies of Light's Visit!'' 
** original title: {{lang|ja|妖精大戦争　～}} Fairy Wars
** source: {{FW}}

* {{Track|05|{{lang|ja|紅茶が飲みたいわ}}|4:31|}}
** ''I Would Like to Drink Some Tea''
** original title: {{lang|ja|亡き王女の為のセプテット}}
** source: {{EoSD}}

* {{Track|06|{{lang|ja|竹林の小径}}|5:42|}}
** ''The Path Through the Bamboo Forest''
** original title: {{lang|ja|永夜の報い　～}} Imperishable Night
** source: {{IN}}

* {{Track|07|{{lang|ja|螢火を以て須弥を焼く}}|3:00|}}
** ''Sumeru Burns with Fireflies''
** original title: {{lang|ja|蠢々秋月　～}} Mooned Insect
** source: {{IN}}

* {{Track|08|{{lang|ja|六角形の石の檻}}|4:28|}}
** ''Hexagonal Stone Cage''
** original title: {{lang|ja|夜だから眠れない}}
** source: {{EaLND|CD}}

* {{Track|09|{{lang|ja|人間サンクチュアリ}}|4:14|}}
** ''Human Sanctuary''
** original title: {{lang|ja|アガルタの風}}
** source: {{NToJ}}

* {{Track|10|{{lang|ja|紅の自警隊}}|4:02|}}
** ''The Crimson Watchguard''
** original title: {{lang|ja|月まで届け、不死の煙}}
** source: {{IN}}

* {{Track|11|{{lang|ja|幻想大瀑布}}|3:35|}}
** ''Great, Fantastic Waterfall''
** original title: {{lang|ja|フォールオブフォール　～ 秋めく滝}}
** source: {{MoF}}

* {{Track|12|{{lang|ja|古道具屋は昼も動かない}}|2:31|}}
** ''The Silent Secondhand Shop in the Noon''
** original title: {{lang|ja|キュアリアス上海古牌}}
** source: {{TUM}}

* {{Track|13|{{lang|ja|ミッドナイトキュリオショップ}}|2:31|}}
** ''Midnight Curio Shop''
** original title: {{lang|ja|キュアリアス上海古牌}}
** source: {{TUM}}

* {{Track|14|{{lang|ja|無邪気でお邪魔な大妖怪}}|5:02|}}
** ''Simple Minded, Bothersome and Great Youkai ''
** original title: {{lang|ja|御伽の国の鬼が島　～}} Missing Power
** source: {{IaMP}}

===Disc 2===
* {{Track|01|{{lang|ja|玄奥なる森}}|4:00|}}
** ''The Mysterious Forest''
** original title: {{lang|ja|真夜中のフェアリーダンス}}
** source: {{FW}}

* {{Track|02|{{lang|ja|魔法の森の人形遣い}}|3:43|}}
** ''Puppeteer of the Forest of Magic''
** original title: the Grimoire of Alice
** source: {{MS}}

* {{Track|03|{{lang|ja|幻想郷アトモスフィア}}|3:43|}}
** ''Gensokyo Atmosphere''
** original title: {{lang|ja|神々が恋した幻想郷}}
** source: {{MoF}}

* {{Track|04|{{lang|ja|モノノケ・オブ・ウォー}}|3:48|}}
** ''Mononoke of War''
** original title: {{lang|ja|アンノウンＸ　～}} Unfound Adventure
** source: {{HSTS}}

* {{Track|05|{{lang|ja|木洩れ日の妖精たち}}|4:07|}}
** ''Sunlight Filtering through the Fairy Forest''
** original title: {{lang|ja|フェアリー冒険譚}}
** source: {{SaBND|CD3}}

* {{Track|06|{{lang|ja|奈落の火}}|3:34|}}
** ''Fires of Hell''
** original title: {{lang|ja|業火マントル}}
** source: {{SA}}

* {{Track|07|{{lang|ja|熱かい悩む神の火}}|3:50|}}
** ''Scorching, Troublesome Divine Flame''
** original title: {{lang|ja|霊知の太陽信仰　～}} Nuclear Fusion
** source: {{SA}}

* {{Track|08|{{lang|ja|放任主義の妖怪の城}}|4:52|}}
** ''Laissez-faire Youkai Castle''
** original title: {{lang|ja|ハートフェルトファンシー}}
** source: {{SA}}

* {{Track|09|{{lang|ja|館の中に少女ひとり}}|3:36|}}
** ''The Lonely Maiden in the Mansion''
** original title: {{lang|ja|少女さとり　～}} 3rd eye
** source: {{SA}}

* {{Track|10|{{lang|ja|真実へ繋ぐ橋}}|4:35|}}
** ''The Bridge Connecting to the Truth''
** original title: Peaceful Romancer
** source: {{MS}}

* {{Track|11|{{lang|ja|リバーチャイルド・ファクトリー}}|5:19|}}
** ''River Child Factory''
** original title: {{lang|ja|幻想機械　～}} Phantom Factory
** source: {{CoSD}}

* {{Track|12|{{lang|ja|ニュークリア・イェーガー}}|4:32|}}
** ''Nuclear Jäger''
** original title: {{lang|ja|ぼくらの非想天則}}
** source: {{HSTS}}

* {{Track|13|{{lang|ja|鬼VS鬼}}|4:57|}}
** ''Demon VS Demon''
** original title: {{lang|ja|亡き王女の為のセプテット}}
** source: {{EoSD}}
** original title: {{lang|ja|砕月}}
** source: {{IaMP}}

* {{Track|14|{{lang|ja|楽しい夏祭り}}|3:15|}}
** ''Cheerful Summer Festival''
** original title: {{lang|ja|童祭　～}} Innocent Treasures
** source: {{CoSD}}

* {{Track|15|{{lang|ja|紅く染まる晩夏}}|3:07|}}
** ''A Crimson Stained Late Summer''
** original title: {{lang|ja|紅楼　～}} Eastern Dream...
** source: {{EoSD}}

* {{Track|16|{{lang|ja|秘密の地下迷宮}}|4:35|}}
** ''The Secret Underground Labyrinth''
** original title: {{lang|ja|魔法少女達の百年祭}}
** source: {{EoSD}}

* {{Track|17|{{lang|ja|禁じられた紅輝心}}|5:30|}}
** ''Forbidden Scarlet Curiosity''
** original title: U.N.{{lang|ja|オーエンは彼女なのか？}}
** source: {{EoSD}}

| notes       =
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