Otaku references in Sunred

Every forumer and his dog recognized Tamaki in ep.24, but what about this in ep.14:

Hint: Hitagi Senjogahara.

There may be more. Zyl is a new fan, maybe I should ask him. {Update: Zyl e-mailed me that he's taking detailed notes, so presumably we can expect a blog post either at Hontou ni or at Sea Slugs.}

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