Was that title confusing? If it is, basically I'm asking "What is your favorite first episode from all of the series in Aikatsu?". There are 4 from the orginal Aikatsu, 2 in Stars and Friends, 2 in Parade (1 being Dream Story, that counts right?).
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I enjoyed all of them about the same, but while it might be a cop out, I think I liked the Parade 1st episode the most- due to all the feels I got from watching it and the nostalgia factor I felt from it. Seeing everyone from the old series showing up in the opening and ending themes (which I loved btw), I was so excited and happy x3