Thanks for every reply, it means alot.
So, I use a OP6 (One Plus 6) with Android 9.0, with of course the One Plus skin. I have 19 percent free space and am directly downloading it. The internet connection is pretty good and stable (2.4 ghz). The downloading process does not take long.
I have already downloaded many other visual novels and had no problem at any time.
Right now I see there is a OP update. I will try again after the installation.
Well, something's still wrong. I am glad that at least other people can still enjoy the. :)
I will try one more thing, deinstalling and re-installing the game.
It actually worked! The 1 mb less big version let me install it. YES! ...So ...How can I support you now? Are you on Patreon or not? I'd really like to show this game some more love and not only with playing it. Okay, I got it I suppose you don't want any donations, because it's a fan-made-game and therefore free?!