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That sounds like a pain in the ass... and not the good kind ^^ Well, in possibly 10 or so years smartphones, tablets and others might become similarly powerful to computers or good laptops from now. I only have a tablet no pc, anyway.

(The following is a lot to clarify a few things)

From Reddit: "It's either you already have an app installed with the same package name but different signature. Or the app itself is not compatible with your phone/OS version..." Another person recommended Lucky Patcher to fully uninstall an existing version that doesn't show up in the settings of the device. And I thought my Lucky Patcher days were over.... how naive. Also, is there a chance the package name com.org.androidset is in conflict with another one? 

Ahh, haha, now I kinda wish it had been a visual novel in retrospect~ Sorry to disappoint you in that regard. Although since you like reading VNs, reading (especially good) novels might not be so different? Hopefully you can find the time to do so. If you're still curious, ckeck out "Gloam Gay Monster Romance (Monstrous Book 4)",  because that is the full name.

To be quite honest, I didn't aquire this book through legal means. However, since I don't want to support Amazon anymore, usually I find good books on smashwords.com where I pay for them unless they're free, like the first volume in the best written, most thrilling gay novel trilogy I've ever come across... Problem is I'm 22 and not earning money, yet, and still I spend not too little on (F)VNs for my own as well as the creators pleasure. Well, it doesn't matter.

You can find Gloam simply on Amazon (score: 4.7/5 in the USA) for $12 or Kindle $0, but I can tell you how I got the ebook (epub) version, so you can make sure if you want to buy it or not. I'll do so myself when I'm "comfortable" enough. Something to note is that the author's other books in the series are apparently very popular.

By the way, do you mind me asking whether or not you like reading FVNs (furry VNs), too? My lists are full of them, with some monsters sprinkled in~ A couple are in fact actually pretty exemplary literary works.

This I can agree with (;