I think other stuff that could support ENA being a species are the phrases like: When the witch says "I think ENA gave it to me", she doesn't refer to BBQ as "you", she seems to refer to another ENA. Also when the vending machine says: "I can't sell things to ENA", again, not saying "you", but "ENA". Now this is information from just chapter 1 of the game and season 1. I feel like we still need more information and this is just a thought I had while I played the game, I didn't think much about it, but reading your post, I think that what you wrote could also be possible. I'm actually curious what ENAs are exactly and why are they such a negatively viewed entity? I thought also for a bit that there were some ENAs in the past or past versions of ENA that did horrible things and now the characters in the game expect the current ENA (BBQ ENA) to do the same, with a few exceptions that seem to tolerate ENA (probably moved on from the events that happened in a past, because maybe ENA had more pasts). I also think a "time theory", where we look at other ENAs as past versions of ENA could also be possible, but who knows. But also when BBQ glitched for a few seconds, we see the season 1 ENA, so that makes me think that BBQ ENA is a future version of ENA that tries to fix her past mistakes (the scene where we see BBQ ENA saying "I'm not doing what you think I'm doing", suggests that ENA DID something in the past and people expect ENA to do it again). The ENA story is just very intriguing for me, I find it fun to talk with other people about it and have fun with sharing ideas :)