{{MusicArticle
| titlejp     = 
| titlejprom  = 
| titleen     = Nightmare Essence
| group       = [[Adust Rain]]
| groupCat    = Adust Rain
| released    = 2015-10-18
| convention  = Autumn Reitaisai 2
| tracks      = 8
| length      = 27:42
| catalogno   = ART-03
| genre       = {{Genre|Vocal}}, {{Genre|Metal}}, {{Genre|Rock}}, {{Genre|Electronic}}
| website     = [https://adustrain.jimdo.com/discography/ Link]
| image       = ART-03.jpg
| banner      = Adust_Rain_banner.jpg
| banner_res  = x60
| caption     = Portrayed: [[Koishi Komeiji]] & [[Satori Komeiji]]
| arranger    = kissssy ([[Adust Rain]])
: {{めにきち}}
| lyricist    = kissssy ([[Adust Rain]])
: gusano
| vocalist    = okogeeechann ([[Adust Rain]])
: K.ShawZ ([[Adust Rain]])
: kissssy ([[Adust Rain]])
| producer    = 
| illustrator = mirimo ([[A.M.A]])
| designer    = 
| masterer    = 
| other_staff = 
| description = It features vocal and instrumental arrangements of themes from ''[[Embodiment of Scarlet Devil]]'', ''[[Perfect Cherry Blossom]]'', ''[[Imperishable Night]]'', ''[[Phantasmagoria of Flower View]]'', ''[[Shoot the Bullet]]'' and ''[[Subterranean Animism]]''.
| tracklist   = 

*{{Track|01|The Nightmare Essence|00:44}}
**arrangement: kissssy
**original title: {{lang|ja|妖々跋扈　～}} Who done it!
**source: {{PCB}}

*{{Track|02|Nevxxxxerland|03:37|lyrics=Lyrics: Nevxxxxerland}}
**arrangement: kissssy
**lyrics: kissssy
**vocals: okogeeechann, K.ShawZ & kissssy
**original title: {{lang|ja|ネクロファンタジア}}
**source: {{PCB}}
**first release: [[Lyrics:_Nevxxxxerland|Nevxxxxerland]] on [[Secret Traveler]]

*{{Track|03|Perceived Notions Between You And Me -situation report cover-|03:37|lyrics=Lyrics: Perceived Notions Between You And Me}}
**arrangement: kissssy
**lyrics: gusano
**vocals: okogeeechann
**original title: {{lang|ja|風神少女}}
**source: {{StB}}
**first release: [[Lyrics:_Perceived_Notions_Between_You_And_Me|Perceived Notions Between You And Me]] on [[ENDLESS DESIRE WILL MAKE YOUR LIFE RUINED]]

*{{Track|04|TRAUMATIC SYNDROME|04:06|lyrics=Lyrics: TRAUMATIC SYNDROME}}
**arrangement: kissssy
**lyrics: kissssy
**vocals: okogeeechann, K.ShawZ & kissssy
**original title: {{lang|ja|少女さとり　～}} 3rd eye
**source: {{SA}}
**first release: [[Lyrics:_TRAUMATIC_SYNDROME|TRAUMATIC SYNDROME]] on [[TRAUMATIC SYNDROME]]

*{{Track|05|Another Sky|04:04|lyrics=Lyrics: Another Sky}}
**arrangement: kissssy
**lyrics: kissssy
**vocals: okogeeechann, K.ShawZ & kissssy
**original title: {{lang|ja|彼岸帰航　～}} Riverside View
**source: {{PoFV}}

*{{Track|06|Secret Traveler|03:26|lyrics=Lyrics: Secret Traveler}}
**arrangement: kissssy
**lyrics: kissssy
**vocals: okogeeechann, K.ShawZ & kissssy
**original title: {{lang|ja|竹取飛翔　～}} Lunatic Princess
**source: {{IN}}
**first release: [[Lyrics:_Secret_Traveler|Secret Traveler]] on [[Secret Traveler]]

*{{Track|07|Nightmare|04:47|lyrics=Lyrics: Nightmare}}
**arrangement: kissssy
**lyrics: kissssy
**vocals: okogeeechann
**original title: {{lang|ja|亡き王女の為のセプテット}}
**source: {{EoSD}}
**first release: [[Lyrics:_Nightmare|Nightmare]] on [[Seeds Of The New Stream]]

*{{Track|08|The Nightmare Party Anthem|03:18}}
**arrangement: {{めにきち}}
**original title: U.N.{{lang|ja|オーエンは彼女なのか}}?
**source: {{EoSD}}

}}