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Sonic the Hedgehog and Tails Prower sharing a tender moment with one another while standing in a golden warp ring that has “Sonails” written on it and a small peek at a world of diamonds inside it. Sonic has his hand on Tails’s arm, with Tails placing his hand on Sonic’s. Sonic has brown skin instead of his usual peach complexion, while Tails has white tips on his hair and is wearing round black glasses.

Preemptively-Answered Questions

These are based on things I’ve been asked in the past, things I’ve seen asked elsewhere, etc. that I can reasonably anticipate will be wondered about with regards to my AU.

What is Aerial Union?
Aerial Union is an alternate universe set in the world of Sonic the Hedgehog, where key events have mostly stayed the same but time has moved differently. Everything from Sonic Adventure to Sonic Forces occurred mostly-identically to how they happened in the main universe, but that history took place over 10 years in this timeline and the characters aged as a result.

How old are Sonic and Tails?
Sonic is 25, in the present day of Aerial Union, and Tails is 22.

Shouldn’t Tails only be 18 if just 10 years have passed?
That’s based on deprecated canon from Sonic Team that has since been removed from official channels. For those invested in the deprecated canon, I’ll give you this: Amy and Tails were both 8 years-old in the Genesis games, but Amy was aged-up in Sonic Adventure to 12 years-old presumably in order to make a romantic coupling between her and Sonic more viable and less one-sided. In Aerial Union, Tails got the same age-up that Sonic Team gave to Amy in 1998 - making him 12 as of Sonic Adventure.

Aren’t Sonic and Tails brothers?
That is a part of their relationship in the official canon, and I do consider chosen family to be perfectly valid. For the purposes of this AU, however, it’s not really a factor in their relationship. Tails still looked up to Sonic as an older kid early on, but over time they both matured and got on equal footing as they got to know each other.

With all the changes you’ve made, are they even the same characters?
I think so! This AU is actually based on my original view of the characters and, though I realize it’s not the same as the canon, I got that view from having played the same games and watching the same shows as anyone else who likes Sonic. If they’re too different for you, you’re entitled to your opinion and I won’t judge if you never read any of it. I only ask that the same courtesy be extended to me.

Why Sonails?
I think they go together really well! I like the way they balance each other out, with Sonic’s outgoing nature pulling Tails away from his insecurities and out into the world while Tails’s intellect and technological skill helps Sonic through problems he can’t solve alone. They’ve been through so much together, and care so much about one another, the pairing is just irresistible to me.

No, but really, why Sonails? Why not SonTails?
Oh. Uh… personal reasons…?