1. Download game
   
2. Run it
   
3. You can choose Configuration Tool or run Game Directly
   
4. Choosing Configuration Tool make you choose:
   
   • Display Settings(Fullscreen/windowed;AA;Shadows;Resolution)
     
   • Control Settings(Keyboard/Controller type)
   After press PLAY you run direct game

When you run game - default keybinds are pretty strange.
AWSD works like an ARROWS
BACKSPACE works a bit like ESC (in options)
L_CTRL works like ESC (in game)
ENTER works like it should

Idk how is binds on controller, cause i not use.

Now lets don't push ourselfs with that, and leave game.
We're gonna modify config files.

Go to:
%SYSTEMDISK%:/Users/%YOUR_USERNAME%/Documents/My Games/ReZERO-TPT
in my case:
C:\Users\user\Documents\My Games\ReZERO-TPT

To edit configs i recommend use some serious tool not basic system Notepad.
It's not neccesery, but it could be helpful.
Theres a lot of good text editor, i personally use developed by Microsoft VSCode. But you could also have a look at: Atom, Sublime, Brackets or just Notepad++.

OK, there we go.

Game is developed for playing on controller thats why we see thats weird keybinds.
If you play on controller and you want change keybinds propably you could edit gamecontrollerdb.txt file. I didn't test it, and i not recommend to modify it, until you make backup of that file.

Here we see all options from Configuration Tool and just keybinds.
Just set as you like ;)

If you confused what is what... Don't worry, i also was.
In that case I recommend to run game > new game and by default if you hold F1 you can see description of controlls.

I hope I helped.
So... Right now i can only wish you to enjoy all ladies :3
[size=5]especially Rem & Emilia <3[/size]