"【G-netプレイレポート】PSP版『Dies irae』をレビュー! これこそ珠玉の中二病バトルAVGだ!!" [G-net Play Report: Review of "Dies irae" PSP version! This adolescent delusion battle adventure game is a gem!!] (in Japanese). Dengeki Online. 2012-07-05. Archived from the original on 2017-06-01. Retrieved 2013-02-04.
美少女ゲームアワード2008 結果発表特設ページ [Bishoujo Game Awards 2008: Results Announcement Page] (in Japanese). Archived from the original on 2010-01-06. Retrieved 2013-02-04.
萌えゲーアワード2010 結果発表特設ページ [Moe Game Awards - 2010 Results Announcement Page] (in Japanese). Archived from the original on 2013-01-27. Retrieved 2013-02-04.
"【G-netプレイレポート】PSP版『Dies irae』をレビュー! これこそ珠玉の中二病バトルAVGだ!!" [G-net Play Report: Review of "Dies irae" PSP version! This adolescent delusion battle adventure game is a gem!!] (in Japanese). Dengeki Online. 2012-07-05. Archived from the original on 2017-06-01. Retrieved 2013-02-04.
美少女ゲームアワード2008 結果発表特設ページ [Bishoujo Game Awards 2008: Results Announcement Page] (in Japanese). Archived from the original on 2010-01-06. Retrieved 2013-02-04.
萌えゲーアワード2010 結果発表特設ページ [Moe Game Awards - 2010 Results Announcement Page] (in Japanese). Archived from the original on 2013-01-27. Retrieved 2013-02-04.