Because.

Artist created the image serving as an impromptu 'cover' for this particular comic back in 2017, as a stand-alone idea. Over the time, the idea grew, and became that we have now as a result.

SYNOPSIS:

Sonic and Tails need money to fix the Tornado. To that end, they dress-up as beach-bimbos, and enter a bikini beauty contest to 'earn' the needed funds (and life-time supply of chili dogs).
Shenanigans ensue.

But anyway.

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Artist:
* FurAffinity - https://www.furaffinity.net/user/antizero/
* InkBunny - https://inkbunny.net/antizero
* Patreon - https://www.patreon.com/antizero