The theme is leather. Luna is restrained entirely with soft restraints. That makes them no less infernal. Each position is strenuous in it's own way. Straps keep Luna in a firm worm tie that turns into a hogtie. Her clothes are cut from her little body to expose her.
A leather bodysuit with mittens keeps Luna confined. The mitts are attached to straps around her feet. She''s comfortable at first on her back, but her position is about to get a whole lot harder.
The leather straightjacket, gag, and straps frogging her legs really make her helpless. She can barely even flip herself over. She has to stay in place while her holes are being penetrated. It's fine, the violation seems to excite her.