{{MusicArticle
| titlejp     = {{lang|en|TOHO EUROBEAT VOL.20}} 秘封ナイトメアダイアリー
| titlejprom  = TOHO EUROBEAT VOL.20 Hifuu Naitomeadaiari
| titleen     = TOHO EUROBEAT VOL.20 Secret Seal Nightmare Diary
| group       = [[A-One]]
| groupCat    = A-One
| released    = 2018-12-30
| convention  = Comiket 95
| tracks      = 6
| length      = 25:17
| catalogno   = AONE-0049
| genre       = {{Genre|Eurobeat}}
| website     = [http://a-one-records.com/discography/000496.html Link]
| image       = AONE-0049.jpg
| banner      = 
| multicolumn =Y
| caption     = Pictured: [[Sumireko Usami]] cosplay
| arranger    = DJ Command
: FN2
: Odyssey & The DNA Team
: ELEMENTAS
: zetoban
: Tsukasa
| lyricist    = Yassie
: [[Travis Stebbins|T.Stebbins]]
: zetoban
: {{越田Rute隆人}}
| vocalist    = {{越田Rute隆人}}
: {{あき}}
: {{みぃ}} ([[GET IN THE RING]])
: [[Travis Stebbins|T.Stebbins]]
: yukina ([[TUMENECO]])
: 0P2C
: Raayo
: NAGISA
{{MusicArticle/Divider}}
| producer    = 
| illustrator = 
| designer    = 
| masterer    = FN2
| other_staff = 
; model
: Yoshiko Veronika
; photograph
: Takashi Ichiyanagi (earl studio)
; hair & make up
: Rie Shimizu (earl studio)
| description = It features vocal arrangements of themes from ''[[Violet Detector]]''.
| tracklist   = 

*{{Track|01|Give It A Like|04:23|lyrics=Lyrics: Give It A Like}}
**arrangement: DJ Command
**lyrics: Yassie
**vocals: {{あき}}, {{みぃ}}, yukina
**original title: {{lang|ja|ルナティックドリーマー}}
**source: {{VD}}

*{{Track|02|Interesting Dream|04:01|lyrics=Lyrics: Interesting Dream}}
**arrangement: ELEMENTAS
**lyrics: Yassie
**vocals: {{越田Rute隆人}}, {{あき}}
**original title: {{lang|ja|ナイトメアダイアリー}}
**source: {{VD}}

*{{Track|03|Lucid Traveler|04:11|lyrics=Lyrics: Lucid Traveler}}
**arrangement: FN2
**lyrics: Yassie
**vocals: NAGISA
**original title: {{lang|ja|ルーシッドドリーマー}}
**source: {{VD}}

*{{Track|04|Nightmares|04:49|lyrics=Lyrics: Nightmares}}
**arrangement: Odyssey & The DNA Team
**lyrics: T.Stebbins
**vocals: T.Stebbins
**original title: {{lang|ja|悪夢日記}}
**source: {{VD}}

*{{Track|05|Bar ”Old Adam”|03:59|lyrics=Lyrics: Bar ”Old Adam”}}
**arrangement: zetoban
**lyrics: zetoban
**vocals: 0P2C, Raayo
**original title: {{lang|ja|バー・オールドアダム}}
**source: {{VD}}

*{{Track|06|1,2{{lang|ja|ダークネス}}|03:54|lyrics=Lyrics: 1,2ダークネス}}
** ''1,2 Darkness''
**arrangement: Tsukasa
**lyrics: {{越田Rute隆人}}
**vocals: {{越田Rute隆人}}
**original title: {{lang|ja|燕石博物誌が連れてきた闇}}
**source: {{VD}}


}}