{{MusicArticle
| titleen     =Twilight Chronicle ～I Am Sister
| group       =Golden City Factory
| image       =GCFT-0054.jpg
| released    =2009/03/08
| tracks      =3
| website     =[http://www.gcfactory.sakura.ne.jp/ Link]
| length      =12:26
| catalogno   =GCFT-0054
| tracklist   =
*01. '''Twilight Chronicle ~ I Am Sister''' ''(4:10)''
** original title: U.N.{{lang|ja|オーエンは彼女なのか？}}
** source: {{EoSD}}

*02. '''Twilight Chronicle ~ I Am Sister (Instrumental)''' ''(4:09)''
** original title: U.N.{{lang|ja|オーエンは彼女なのか？}}
** source: {{EoSD}}

*03. '''Twilight Chronicle ~ I Am Sister (Off vocal)''' ''(4:07)''
** original title: U.N.{{lang|ja|オーエンは彼女なのか？}}
** source: {{EoSD}}

| musictype   =Arrange CDs
| convention  =Reitaisai 6
| lyricist    ={{lang|ja|笹森カワ丸}}
| vocalist    ={{lang|ja|真優}}
| illustrator ={{lang|ja|六羽田トモエ}} (EnHANCE HEART plus)
| review      =
}}