{{MusicArticle
| titlejp     =シアワセエゴイスト
| titlejprom  =shiawase egoisuto
| titleen     =The Happy Egoist
| group       ={{森羅万象|link}}
| groupCat    ={{森羅万象|en}}
| groupCat2   =
| groupCat3   =
| groupCat4   =
| released    =2016-12-29
| convention  =Comiket 91
| tracks      =7
| length      =
| catalogno   =SBCD-0007
| genre       ={{Genre|Vocal}}
| website     =[http://shinra-bansho.sakura.ne.jp/siawase_egoist/ Link]
| image       =SBCD-007.jpg
| banner      =SBCD-007_banner.jpg
| banner_res  =x60
| arranger    =kaztora
; Arrangement support
:AJ
| lyricist    =azuki
:kaztora
:ticat
:Roccol&quinn
| vocalist    ={{あやぽんず＊}}
:{{あよ}}
:{{めらみぽっぷ}} ([http://cosmopolitan93.net/ COSMOPOLITAN])
:{{みぃ|link}} ([[GET IN THE RING]])
| producer    =
| illustrator =kirero ([http://kirero.xxxxxxxx.jp/about.html KirororO])
| designer    ={{lang|ja|干支神一夜}} ([https://twitter.com/EtogamiK Twitter])
| masterer    =
| other_staff =
; Bass
:Pira (All tracks)
; Drums
:{{lang|ja|裕木レオン}} (All tracks)
; E.Guitar
:AJ (All tracks)
; Co-programming
:Hedonist
; Mixing
:{{スグル}}
:Hedonist
:{{ハム}} ([[Foxtail-Grass Studio]])
; Mastering
:Hedonist

| description =It features vocal arrangements of themes from ''[[Embodiment of Scarlet Devil]]'', ''[[Phantasmagoria of Flower View]]'', ''[[Subterranean Animism]]'', ''[[Undefined Fantastic Object]]'' and ''[[Seihou Project]]''<nowiki>'</nowiki>s ''[[Kioh Gyoku]]''..

| tracklist   =

*{{Track|01|{{lang|ja|天国地獄大地獄}}||lyrics=Lyrics: 天国地獄大地獄}}
**''Heaven, Hell, Avīci''
**arrangement: kaztora
**lyrics: kaztora
**vocals: {{あやぽんず＊}}
**original title: {{lang|ja|魂の花　～}} Another Dream...
**source: {{PoFV}}

*{{Track|02|{{lang|ja|サンライトフラワーデイズ}}||lyrics=Lyrics: サンライトフラワーデイズ}}
**''Sunlight Flower Days''
**arrangement: kaztora
**lyrics: azuki
**vocals: {{めらみぽっぷ}}
**original title: {{lang|ja|桜花之恋塚 ～}} Flower of Japan
**source: {{KG}}

*{{Track|03|aurora||lyrics=Lyrics: aurora}}
**arrangement: kaztora
**lyrics: ticat
**vocals: {{あやぽんず＊}}
**original title: {{lang|ja|業火マントル}}
**source: {{SA}}

*{{Track|04|{{lang|ja|追憶のディテクター}}||lyrics=Lyrics: 追憶のディテクター}}
**''Reminiscence Detector''
**arrangement: kaztora
**lyrics: ticat
**vocals: {{めらみぽっぷ}}
**original title: {{lang|ja|小さな小さな賢将}}
**source: {{UFO}}

*{{Track|05|{{lang|ja|ハイカラー（大正浪漫ティック編）}}||lyrics=Lyrics: ハイカラー}}
**''High Color (Taisho-Era Romantic Version)''
**arrangement: kaztora
**lyrics: kaztora
**vocals: {{あよ}}
**original title: {{lang|ja|死体旅行 ～}} Be of good cheer!
**source: {{SA}}

*{{Track|06|Snowdome||lyrics=Lyrics: Snowdome}}
**arrangement: kaztora
**lyrics: Roccol&quinn
**lyrics (Japanese draft): ticat
**vocals: {{みぃ}}
**original title: {{lang|ja|おてんば恋娘}}
**source: {{EoSD}}

*{{Track|07|{{lang|ja|シアワセエゴイスト}}||lyrics=Lyrics: シアワセエゴイスト}}
**''The Happy Egoist''
**arrangement: kaztora
**lyrics: kaztora
**vocals: {{あやぽんず＊}}
**original title: {{lang|ja|お宇佐さまの素い幡}}
**source: {{PoFV}}
**promotional video: [https://www.youtube.com/watch?v=CtIJ6J9i4A0 YouTube]

}}