To be honest, i don't know what to say. Game and storyline are great themselves, has a lot of potential and plot twists. Characters has there unique charm. But a battle system is bit clunky, awkward. No possibility to use special move sets, sometimes characters attack not in right order, glitches. I know it's engines issues, it's not perfect for it (forgive me, MIGHTY Ren'Py), and i'm nobody to babble about it, but if the main feature of game is tactical battles (and nsfw of course) - Godot is better choice. But (too much but's) there is another solution - change battle system for comfort use in Ren'Py. Like The Banner Saga (chess battlefield), or Vambrace(side view).
It's only my option. I hope i helped you a little. Good luck with the project.