Episode 09
English Ayano's Theory of Happiness
Kanji アヤノの幸福理論
Rōmaji Ayano no Koufuku Riron
Release June 07, 2014
Running Time 23 Minutes
Episode Guide
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08. Lost Time Memory 10. Fantasy Forest

Ayano's Theory of Happiness (アヤノの幸福理論 Ayano no Koufuku Riron) is the ninth episode of the Kagerou Project animation, called Mekakucity Actors. It first aired in Japan, on June 07, 2014.



  • The version of Ayano no Koufuku Riron that was featured in this episode was sung by Aki Okui.
  • While featuring a special opening animated with a 3D program, the episode received a remade 2D version of the opening sequence on the Blue-Ray and DVD version, thus increasing the quality.[1]

See also


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