Someone else already wrote a comment about it, but on Android it doesn't work unfortunately. It's says it's invalid.
Where is the Android version?
You go to the folder where VM is in. Then you click on game and then on images.
I think there will be NSFW eventually because the writer for the VN posted on his twitter that there was a poll on his Patreon that asked if there should be NSFW content in the future and the majority said yes. You can see it here.
