Yeah, that might as well be in an alien language.
Dont worry - try to download unrenbat first than run it in root game directory when exe game file is located.
Most usefull options are 1 and 2 in this tool.
You dont even have to understand what this tool is exactly doing.
If you use option 1 - the tool will extract all files from rpa archives so this way you get access to all images and animations hidden in rpa archives. So you can browse unpacked images using windows slide show tool for each subdirectory.
Option 2 allow you decompile compiled rpyc files to rpy files which you can edit in notepad if you want.
For simple changes you dont even understant Python at all, all you need is just text editor skill.
For advanced mods, python skills are helpfull if you trying to create them not just copy paste them.
Text editor dont bite you. It is safe. I know beginners are often unaware they need a tool to unpack rpa files.
Some games are distributed unpacked and others are packed in rpa archives.
And python is not hard language to learn at basic level.
If you have just one of renpy games you dont have to install python environment separate for experiments with this language.
You can just use python library distributed with the game you have.
For this one game distributed with renpy 7.xx it is python 2.xx
Some minor differences are between 2.xx and 3.xx versions in Python but it is not impotant at start at all.
You can use developer menu to run your own python code if you mod this menu a bit just adding your own button for running your own script.
Such script can mod part of your game or can do things unrelated to game. All output you can save to text file in your script to execute it faster. So when you run your script just new text file will pop up in root directory of your game.
So you can browse - your output file - by text editor like notepad in windows .
Believe me - you dont need to be programmer to use python this way. All you need is just bit of patience to learn basic skills.
I'm old guy and i've learned python less than 2 years ago despite I'm playing renpy games more than 4 years.
Cos at start I was too leazy to learn python and was confused by errors python sometimes reported.
So first I downloaded unren tool and started running games in developer mode enabled.
Than I watched variables in games in developer mode and the next I wanted to create better browser for variables so i started to learn renpy and python as well.
The next stage of my adventure with Python was to create some short mods in games.
And finally I started to create huge code for analysing renpy games - all their content - text nodes, images, variables, paths etc. And still I'm not a programmer just skilled amateur.
You can download a lot of books for python from torrents for free if you dont want wasting money for paper books.
Just one book would be enough to learn basic skills in python.
Sooner or later most of us will need some basic skill of python in everyday use cos of AI fast growing imho.
If you would like to get a controll over your local AI engine python would be really helpfull for you.
But as I said you dont need to understand Python to do some copy-paste text mods.
It is needed only if you want develop your skills further to create some original parts of code.
Adult games and their hidden content give us some motivation to learn some basic skills faster.
Learning even basic skills without fast reward would be really boring.
So my point is - the faster you start learning some basic skills the sooner you get your reward.
You will learn why some games are cool and others are boring. The devil is in details.
Higher skills would allow you to compile resources from different games to create something new for fun.
For such advanced goals higher skills and advanced tools are required.
In such tasks AI would be helpfull soon I hope.
For basic goals to recognize which developer is really productive and what amount of hidden content is still in the game you like you dont need high skills. Just unren extractor tool and bit of patience would be enough.
The dev of this game is pretty productive. And content is of high quality - I dont mean compression or resolution but facial emotions, shapes, lighting etc.
Some other devs have also some high quality content but mostly are less productive or in many cases abandonnig their projects at early stage cos they cant attract enough supporters.
So if you are aware player you can save a lot of time just by unpack and decompile games to see sooner what hidden content is still inside. This way you can get more times for finding hidden gems here as your reward.
edit
Keep in mind our imagination creating part of the game, so not everything whats look cool at first glance must be cool later.
If you can look inside how many variables are involved and what are triggers for paths or events you can better understand what are your preferences and what kind of games you should try first.
So extractor tool and basic skill can tell you much more about the game than 100s of comments or reading long detailed guide file.