itch.io

No there are additional side characters but only 3 girls/women that you do most stuff with

Correct it's only possible to romance Emily,  it's all explained in the description so please read it instead of asking questions 

Not yet

It may come further in the story line I don't know if Az has said one way or the other yet 

He used to release updates here when it was released for $5 patreon tier but 2 weeks as come and gone so it most be (hopefully) gone be released with $1 tier patreon which is 30 days after initial release to top tiers on patreon

I'm in the same boat with you I'm not paying for patreon

Update drops on itch in roughly 2 weeks  at time of typing this it is available to anyone who has pledged $10 or more on patreon

Also you pay more you get access to it sooner and if it wasn't mentioned on patreon you would know nothing about an update dropping soon

PLEASE have a little faith in that it's still being developed and have patience for Pete's sake it's a high quality project and it COULDN'T be so if it was rushed