What if every Mobian male except for Sonic was killed by a virus?

[SonicJordan 0]

What if, after the events of Sonic the Hedgehog (2006), every Mobian male over the age 13, except for Sonic the Hedgehog, was killed by a mysterious virus?

[Shinomi-chan 294]

Then it would be World's End Harem setting....? But with Mobians?

[SonicJordan 0]

Every Mobian male, like Tails and Charmy, under the age 13 is vaccinated.