itch.io

If you're on android, download the game, it'll say something like "you already have this app, do you want to update it" and you'll still have all your saves when it's done. Dunno about other platforms, but I imagine they're similar.

Negative makes the dialogue before the fights more aggressive, positive makes it more lewd, and sometimes leads to additional scenes.

Visit the Residential Area between 20:00 and midnight on either Monday or Tuesday. I think you either had to roam around until you found the place or there was a new option to go straight to him.

You redownlaod the game from here when there's an update, and you'll get a message like: 'you already have this file, would you like to update it?' or something.

You should be able to install it by opening your files / file manager app and finding it under recent downloads.

You can press 'Ignore' to go back to your game, it's just letting u know there's an error or something.