ok so to address one by one:
One Line
The line seems to only appear in fullscreen mode, currently there's no known solution until we figure out what's causing
Config Text
The text at the bottom of the Config screen is actually example text to check your scroll and auto speed, it was packaged into the engine by default lol.
Music Cutting Out/Language
The music not looping and the language change is another known thing we're looking into!
Narration Attributed to Character
So far I've only found one instance of this (Clary) and it's been corrected.
Character Blacked Out
This is part of the engine - each character has an official name in the code so if they're not directly referred to as their official name in the code, they won't be directly highlighted.
Game Soft Locking
This is also a prominent known issue and the solution is given on the main page FAQ!
Keyboard Support
Still currently looking into rebinding keys for this engine so we'll put a tab on this one as it's not a super high priority at the moment.
Tutorial Icons
We'll experiment with the buttons more for sure. This engine is geared solely for visual novels so certain features may be abit harder to implement.
Thank you for the detailed feedback!