This fairly short game uses old German lettering and a conlang, or constructed language, (with some translations given) to show you as a soul who desires to achieve their true body.
You have to interact with a doctor’s office, every choice you make (including your use of the conlang)showing what you are like. When you reach the doctor, you ask for your true body, but the doctor will only grant this if you have modeled the right behavior.
It’s easy to read this as a trans metaphor, whether it is or not, with some doctors requiring you to exhibit “correct” dysphoria before receiving hormones, but it has enough of common experience in it to apply to many situations.