https://www.animenewsnetwork.com/news/2013-10-02/walkure-romanze-anime-ad-features-miyuki-hashimoto-song
Walkure Romanze Anime's Ad Features Miyuki Hashimoto's Song - News - Anime News Network
Ricotta's adult PC game inspires anime premiering next week
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https://www.animenewsnetwork.com/encyclopedia/company.php?id=12335
Walkure Romanze Production Committee - Anime News Network
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