Can anyone tell me why literally every time a new emulator drops, sonic mania is one of the first games that runs on it?

Is it easy to emulate?

Well, if you can use a windows/linux pc as host, you can use Sunshine Stream. It uses Moonlight receiver app which is on basically everything that computes. But it’s host software is not on Android (probably)

That looks like Reimu

Dang that must take some effort to make by hand,

Or is it some sort of stencil?

bing will have Yakuza 0 Kuze Finger cut scene