1. Is the art AI generated?
2. Will it come to android?
in the dialog options for a random NPC, there will be an 'invitations' section where you will have the option to try and recruit a club member if you've gotten that far with Ayano. If you don't see this then try talking to the student council head. Now I don't remember exactly how that all plays but that should get you started in the right direction.
I must say this is the first time I've heard that one. Every one I know seems to like mega because it manages the download for you and is free unless you plan to store large amounts of data on mega. You also don't have to interact with the app much at all after setting it up because you can just install the app from the mega folder in your storage.