Unlit Material Cast Shadows

Hey Guys, I’m brand new here so I have lots of questions. I’m trying to get an unlit material to cast shadows. Basically, I have a material with an alpha using and opacity mask. I can’t the effect where the image is on a plane that doesn’t receive light but still cast a shadow. Is this possible? Any help would be appreciated. Thanks

I have done something similar just using default material and putting 0 to base color and writing the real color to Emissive output. So it look like unlit but can actually cast shadows, because it is really not.