- Oh hey comic from March 2002 what's up
This might be difficult to believe, coming from me, but I don't think EVERYTHING needs to be explained.
I've known for years, however, that I'd EVENTUALLY have to provide a non-joke explanation for uryuoms being hidden on Earth.
As amusing as t-shirts that say "I'm a human for realsies" and the like are, they're so silly as an explanation that they'd be fourth-wall breaking if I tried to make them ongoing canon. This would basically keep anything significant with uryuoms from being part of the story.
As for Sarah not immediately noticing Grace's antennae, I don't think that needed an explanation. This isn't me desperately explaining a small bit of weirdness from 2002.
Addressing Sarah not noticing, however, gets into the fact that seyunolus with antennae can do projections, and how intentionally absurd uryuom "projections" actually are.
You don't avoid an opportunity to establish two new on-topic things just to try and keep people from thinking you're hung up on a technically detail from 2002 ha ha ha
BUT SERIOUSLY I WASN'T SELF-CONSCIOUS AT ALL ABOUT SARAH NOT NOTICING GRACE'S ANTENNAE
NO SUCH THING HAS BEEN ON THE BACK OF MY MIND FOR OVER TWENTY YEARS
Also, Grace saying "I look ridiculous" makes way more sense now, so there.
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