A few rrats regarding the stream:
According to Gura, a number of bits were "scrapped" by cover for her birthday. Most likely this Live was made from the scraps that couldn't be finished in time, and the Myth recordings were recycled by Kanauru for use in her birthday "live". You can tell this was made for her birthday, too: On the calender in her room you can see June 20th (her birthday) is clearly marked, along with her phone's date being June 20th as well.
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The fact that this exists at all was likely Jenma's doing: she's listed as an executive producer for the animation and was promoted to EN head manager after Cover fumbled the live (early August was when Kiara mentioned the promotion, it was likely a few weeks or a month earlier than that). She probably worked to uncancel the daki too.
tl;dr Kneel to the best manager in EN.
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