{{MusicArticle
| titlejp     =聖謐 {{lang|en|Sei-Hitsu}}
| titlejprom  =Seihitsu
| titleen     =Tranquility
| group       =[[C-CLAYS]]
| groupCat    =C-CLAYS
| image       =Seihitsu.jpg
| banner      =
| released    =2012-12-30
| convention  =Comiket 83
| catalogno   =TOCD-0037
| tracks      =08
| length      =??:??
| website     =[http://www.c-clays.com/work/seihitsu/ Updated Link]<br />
[http://www.c-clays.com/03_pro/sei/sei.html Original Link]
| illustrator =
| designer    =
| arranger    =
| lyricist    =
| vocalist    =
| masterer    =
| producer    =
| other_staff =
<table><tr valign="top"><td>
; Arrangement
:Y
:{{あとぐる}}
:W*M
:{{lang|ja|京箪笥}}
:{{lang|ja|美有耳虚無頭}}
:tsunamix
:{{創 無頼人}}
:K2
; Lyrics
:Y
:{{小峠 舞}}
:W*M
:{{lang|ja|みゅうじこむず}}
:{{真崎エリカ}} (AZURE FACTORY)
; Vocals
:Y
:{{小峠 舞}}
:{{lang|ja|高山野 わら}}
:{{lang|ja|トーンジュエル}}</td>
<td>
:; Production
::{{綾瀬 孝}}
:; Illustration
::{{植田亮}} ([http://fancyfantasia.jp/ FancyFantasia])
:; Design
::[http://winfanworks.com/ WINFANWORKS]
:;Guitar
::{{lang|ja|じょう}}
::Sassy ([[君の美術館|kimino-museum]])
:; Synth Programming (Track 01)
::Y
:; Mix (Track 01)
::K
:; Mastering
::{{lang|ja|門垣良則}} (MORG)</td></table>

| description =It features vocal and instrumental arrangements of themes from ''[[Embodiment of Scarlet Devil]]'', ''[[Perfect Cherry Blossom]]'', ''[[Imperishable Night]]'', ''[[Shoot the Bullet]]'', ''[[Mountain of Faith]]'', ''[[Subterranean Animism]]'', ''[[Undefined Fantastic Object]]'', and ''[[Ten Desires]]''. 

| tracklist   =
*{{Track|01|{{lang|ja|ゲンソウトミライ}}|04:44|lyrics=Lyrics: ゲンソウトミライ}}
** ''Illusions and the Future''
** arrangement: Y
** lyrics: Y
** vocals: Y
** guitar: {{lang|ja|じょう}}
** synth programming: Y
** mix: K
** original title: {{lang|ja|神さびた古戦場 ～}} Suwa Foughten Field
** source: {{MoF}}

*{{Track|02|New World|03:51|lyrics=Lyrics: New World}}
** arrangement: {{あとぐる}}
** lyrics: {{小峠 舞}}
** vocals: {{小峠 舞}}
** original title: {{lang|ja|感情の摩天楼 ～}} Cosmic Mind
** source: {{UFO}}

*{{Track|03|Conjure|04:40|lyrics=Lyrics: Conjure}}
** arrangement: W*M
** lyrics: W*M
** vocals: {{小峠 舞}}
** guitar: Sassy
** original title: {{lang|ja|廃獄ララバイ}}
** source: {{SA}}

*{{Track|04|Misty Heart|03:21}}
** arrangement: {{lang|ja|京箪笥}}
** original title: {{lang|ja|千年幻想郷 ～}} History of the Moon
** source: {{IN}}

*{{Track|05|Chain of Border|04:45|lyrics=Lyrics: Chain of Border}}
** arrangement: {{lang|ja|美有耳虚無頭}}
** lyrics: {{lang|ja|みゅうじこむず}}
** vocals: {{lang|ja|高山野 わら}}
** original title: {{lang|ja|亡き王女の為のセプテット}}
** source: {{EoSD}}

*{{Track|06|Infection Virus|06:58}}
** arrangement: tsunamix
** original title: {{lang|ja|幽雅に咲かせ、墨染の桜 ～}} Border of Life
** source: {{PCB}}

*{{Track|07|{{lang|ja|歳月アパートメント}}|03:43}}
** ''Time Apartment''
** arrangement: {{創 無頼人}}
** original title: {{lang|ja|レトロスペクティブ京都}}
** source: {{StB}}

*{{Track|08|{{lang|ja|メロウリンク}}|04:22|lyrics=Lyrics: メロウリンク}}
** ''Mellow Link''
** arrangement: K2
** lyrics: {{真崎エリカ}}
** vocals: {{lang|ja|トーンジュエル}}
** original title: {{lang|ja|聖徳伝説 ～}} True Administrator
** source: {{TD}}

}}