Detour, 19 bytes

`u
@"Hello, World!"

Try it online!

This language was not designed with strings in mind.
"How do you fit a string literal into a 2D language represented on a grid of characters?"
You don't! Just put a `, and then define what the `'s stand for on the bottom with @ signs! (sigh)

I'll try to come up with a shorter way to fit in strings later. At least it's not Java.