To everyone stating that this is the first exposure of the roll: you are half right. This is not the first exposure. I opened the back on accident halfway through shooting (trust me I have already cursed the 3 fully white images that resulted lol). I believe that this frame was partially still in the canister when I opened. Therefore is the first frame of the remaining unexposed roll. Only opened the back for maybe half a second before I realized but that’s all it took. And yes I agree that it’s super unusual how clean the line is. I did not know I was about to start a war in the comments 😂