[[File:SGNV-0003_banner.jpg|500px]]{{MusicArticle
| titlejp     =永遠深月
| titlejprom  =Eien Shingetsu
| titleen     =
| group       =[[Saga Novel]]
| groupCat    =Saga Novel
| groupCat2   =
| groupCat3   =
| groupCat4   =
| released    =2011-10-16
| convention  =Touhou Kouroumu 7
| tracks      =10
| length      =51:39
| catalogno   =SGNV-0003
| genre       ={{Genre|Vocal}}, {{Genre|Instrumental}}, {{Genre|Electronic}}, {{Genre|Rock}}, {{Genre|Traditional}}
| website     =[http://saganovel.info/archives/portfolio-item/永遠深月 Updated Official Site]<br />
[http://saganovel.web.fc2.com/sppage/eienshingetsu.html Original Site]
| image       =SGNV-0003.jpg
| banner      =
| arranger    ={{蒼原 響}}
:{{うどんタイマーＰ}}
:{{ロウ。}} ([[paropunte]])
| lyricist    ={{ロウ。}} ([[paropunte]])
:{{H:title|シルバ|Silve}}
| vocalist    ={{うどんタイマーＰ}}
:{{lang|ja|すめ}}
:shell
| producer    =Saga Novel
| illustrator ={{ロウ。}} ([[paropunte]])
| designer    =
| masterer    =
| other_staff =
; Piano
:{{蒼原 響}}
:{{lang|ja|すめ}}
; Bass, Guitar, Key
:{{うどんタイマーＰ}}
; Drums
:{{ペンギン}}
; Promotional Video
:{{H:title|シルバ|Silve}}
; Engineer
:{{シュン}}

| description =It features vocal and instrumental arrangements of themes from ''[[Imperishable Night]]''. The album opens and closes with instrumental piano arrangements by {{蒼原 響}} that are loosely classical in nature. 

The album is the only released by the circle to feature traditional vocal arrangements by {{ロウ。}} and is also the first to feature drums by member {{ペンギン}}.

| tracklist   =

*{{Track|01|{{lang|ja|偽夜への誘い}}|05:20}}
**''___''
**arrangement: {{蒼原 響}}
**original title: {{lang|ja|永夜抄　～}} Eastern Night
**source: {{IN}}

*{{Track|02|{{lang|ja|水面のゆめ}}|05:12|lyrics=Lyrics: 水面のゆめ}}
**''___''
**arrangement: {{うどんタイマーＰ}}
**lyrics: {{H:title|シルバ|Silve}}
**vocals: {{うどんタイマーＰ}}
**original title: {{lang|ja|蠢々秋月　～}} Mooned Insec
**source: {{IN}}

*{{Track|03|la noche eterna|08:32}}
**''Eternal Night''
**arrangement: {{蒼原 響}}
**original title: {{lang|ja|夜雀の歌声　～}} Night Bird
**source: {{IN}}

*{{Track|04|Scatter STAR|04:50|lyrics=Lyrics: Scatter STAR}}
**arrangement: {{うどんタイマーＰ}}
**lyrics: {{ロウ。}}
**vocals: {{うどんタイマーＰ}}
**original title: {{lang|ja|恋色マスタースパーク}}
**source: {{IN}}

*{{Track|05|capta|07:26}}
**''Capture''
**arrangement: {{蒼原 響}}
**original title: {{lang|ja|シンデレラケージ　～}} Kagome-Kagome
**source: {{IN}}

*{{Track|06|{{lang|ja|月隠れ}}|01:40|lyrics=Lyrics: 月隠れ}}
**''___''
**arrangement: {{ロウ。}}
**lyrics: {{ロウ。}}
**vocals: {{lang|ja|すめ}}
**original title: {{lang|ja|蠢々秋月　～}} Mooned Insect
**original title: {{lang|ja|月まで届け、不死の煙}}
**source: {{IN}}

*{{Track|07|TRUTH|03:30|lyrics=Lyrics: TRUTH}}
**''___''
**arrangement: {{うどんタイマーＰ}}
**lyrics: {{ロウ。}}
**vocals: shell
**promotional video: [http://www.nicovideo.jp/watch/sm15817412 niconico video] <sup>(Requires account)</sup>
**original title: {{lang|ja|プレインエイジア}}
**source: {{IN}}

*{{Track|08|aeterna|05:28}}
**''Eternal''
**arrangement: {{蒼原 響}}
**original title: Eternal Dream　{{lang|ja|～ 幽玄の槭樹}}
**source: {{IN}}

*{{Track|09|{{lang|ja|月下夢想}}|02:18|lyrics=Lyrics: 月下夢想}}
**''___''
**arrangement: {{ロウ。}}
**lyrics: {{ロウ。}}
**vocals: {{lang|ja|すめ}}
**original title: {{lang|ja|千年幻想郷　～}} History of the Moon
**source: {{IN}}

*{{Track|10|ALL THE EAST|07:23}}
**arrangement: {{蒼原 響}}
**original title: {{lang|ja|月見草}}
**source: {{IN}}

| notes       =
| review      =
| print_references =
}}