Okay, I think I managed to do this :D
I changed the default language and also make ingame settings to work on emulator. (It was fun to install an emulator of renpy on emulator of android :))
And thank you for your explanation on joiplay!
Thanks for all the effort for making this beautiful game and updating it so that English speakers could play it on mobile. I was only looking for a workaround when reaching out to you; didn't expect all this! <3
I submitted your game to the emulator's compatible games list, I hope that the both of you get some more much deserved recognition.