Right-click on Pink Rage Otome in the Steam client and click Properties. Click the Local Files tab, then Browse Local Files.

Open the folder called game inside the main Pink Rage Otome! folder.

Create a new plain text document and paste the following lines (make sure to keep spacing and indents!):


These are the default values in the game. Now you can change them to whatever you want. The values for the outlines are (thickness, "#hexadecimal color code", x drop shadow, y drop shadow). I found size 45 black outlined text (1, "#000000", 0, 0) easy to read.

Comparison:


Save the file in the game folder as patch.rpy (NOT patch.rpy.txt! If you're not sure, check that your folders are set to show file extensions).

Note: Text that's not in a normal dialogue box, such as the narration at the very beginning of the game, might not be changed.

Increasing the font size might break the text box (specifically, cause a gap between the text box and the bottom of the screen).

Delete the files patch.rpy and patch.rpyc (the encrypted file generated when you launch the game).