Luna Engine Sample is a trial that only offers bare minimum. It should've been this one and a bit outdated but it should still be the core features: https://github.com/Archeia/Luna-Engine-VXA/tree/master/Luna Engine Battle Sample
Note that the config files will most likely not work.
No it's fine just asking. I made an extension that lets you put images for default choices and changes this easily so I want to be sure it's not that. Changing the Choice Box text requires scripts. Look for the script, Template_ChoiceBox. It can be seen here:
Copy and Paste it and rename it...
I always see a few people asking for C# in next engine and I always thought: Do I not know enough about that language to tell it will affect extensibility and customizability to the negative? Watching a video from SumRndmDde today I feel confirmed.