is the 27th single by Gothic music duo Ali Project. This single was released on July 14, 2010 under Mellow Head and the single only come in a regular CD only edition. The single's catalog number is LHCM-1078. The single title is used as the opening theme for the PlayStation Portable game, Fate/Extra.

Track listing # Track name Romaji English 01 亂世エロイカ Ranse Eroika Chaotic Heroic 02 腕 kaina Ude kaina Kaina Arm 03 亂世エロイカ (instrumental) Ranse Eroika (instrumental) Chaotic Heroic (instrumental) 04 腕 kaina (instrumental) Ude kaina (instrumental) Kaina Arm (instrumental)

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