See a mesh through a texture

A few weeks ago i’ve drawn a new character. Excited by her design i thought to make her in 3D. Before starting tho i noticed an issue. You see the body of the character have a special feature. Through her body, in fact, it’s possible to see some spheres, called Cores.

So my issue is to recreate this same effect or something similar to it. I thought to create some spheres to put inside the model. But then i thought “How can i make them see though the model?” I thought about using the transparency with the Node editor or something like that, but then i would see the objects and the background behind her and, as you can see from the picture, you can’t see, for example, the back of her hair or the rest of the cloak. The only things you can see are the Cores and the Eyebrows.
So i would like to know if any of you know how to recreate it

P.S: I didn’t started the model yet, this is just a theoretical question.