東方非想天則 (romanized: Touhou Hisoutensoku, literal meaning: Lacking Perception of the Natural Laws of the East or Lacking Perception of the Rule of Heaven in the East) is a standalone expansion pack to the fighting spinoff Scarlet Weather Rhapsody with five new characters. Combining this expansion with an installation of Scarlet Weather Rhapsody allows for the use of additional Touhou characters within the new expansion.