*Sigh* I said I was going to wait for a better group, but I can't. I watched it anyway. I cannot resist more Momiji/Aoi.
[TZMremux] Asobi ni Iku Yo 03 [1280x720]
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Note: Immediately after the OP (which was rather bland btw) there is a Kampfer cameo by female Natsuru and Shizuku, along with their stuffed animals.
edit:
I really like Aoi. Really. She's a really excellent character in a number of ways, and Hanazawa Kana has been great playing these kind of dual-personality roles lately. What's more, the earth faction aligned with the Doggie Race (they really call themselves that...) had a number of very interesting details on Aoi, as scene during the presentation on her and Manami.
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Futaba Aoi:
Mother: Dead.
Father: kidnapped and missing years ago.Confirmed re-married to Garbilan (alien from planet Garble).
[Not sure on the spelling of Garbilan/Garblian. It is a bit unclear due to the grainy display].
Step-mother (Garblian): She looks to be in her late twenties.
Half sister: She is physical and mentally elder than Aoki (Aoki?) caused by the Urashima effect in subspace.
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While a few of those things aren't exactly clear, like whether her sister's name is Aoki and which one appears older due to relativity, it seems as if there is plenty of explanation for Aoi's powers. I was guessing earlier, but it she seems to really be half alien!
Manami's background is a bit less exciting, but Itokazu-sensei's is kind of funny. I'm guessing some of the English is missing an "other than" in the "anything related to Sci-Fi..." in her comment field. It certainly would explain her twisted view of what First Contact should be.
Lastly, while it is nice that Kio gets to live with so many girls (are there even male aliens??), it feels a bit wrong that his house would get completely co-opted into the Katyian Embassy. If you think about it, he lost his home!