I bought it today and played for a little bit. Like reading the first dialoges, running around a bit, checking out the controls and doing some battles. It runs and plays fine on my 8" Huawei MediaPad M2. Controlls can get a little fiddly but I can get used to this. I can't imagine playing this on a smaller screen like a smart-phone to be honest. But there are options to adjust text size etc.
Bought it from the German Google Play store for 10,99. It was 7,99 when it launched, but maybe that was a price error? Supported languages are English, German, French, Korean and Polish.
This is the third time I started this game. Didn't like it when it was new and a second try with widescreen mods some years ago didn't go beyond 5 hours of playtime. It's maybe a little bit to wordy for me and the battles aren't that great. I am also not a fan of the setting. But the story and characters seem really good and I always wanted to try out a game like this on tablets.
I will play with the stats Sillverrr posted above to get the most out of the dialoges. I'll also play on the easiest setting so that I don't have to worry too much about the fighting. One question about that, because the description is somewhat unclear: Is "1" out of 5 easiest setting or hardest?
Might update my impressions later. Too many games at the moment.