"Datengoku Sensen" (堕天國宣戦, "Corrupted Kingdom of Heaven War Declaration") is Ali Project's 26th single.

This single was released as a CD on 21 October 2009 under Mellow Head, a sublabel of Lantis, an anime music company.

The single title was used as the opening theme for the anime series Tatakau Shisho: The Book of Bantorra.

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