Arpeggio Of Blue Steel: TV Series - Blu-ray Anime 2013 MA15

Arpeggio of Blue Steel is a 2013 Japanese anime television series based on Ark Performance's manga. Set in the near future, it follows humanity's fight against a fleet of mysterious warships manned by AI. With fantastic naval battles and a deep sci-fi premise, this series is rated TV-14 for its action and complex themes.