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The opening credits used for the arc makes several references to the credits for "Renai Circulation", although there are several changes like a dark color scheme instead of the pastel colors of "Renai Circulation", and some scenes in "Renai" played in reverse. The song's chorus, for example, reflects Nadeko's outlook on the world during the events of Nadeko Medusa: "If the world can’t be the way I want / Then I have no use for it anymore / There’s only one thing I desire / Everything Everything Everything Everything". In stark contrast to " Renai Circulation", "Mousou Express" symbolizes Nadeko's change in character in the Nadeko Medusa story arc while retaining her cute image.
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