Its a very long oneshot, I believe [over 70 pages or so] about two identical sisters in love with the same guy. He s hoping to propose to one of them and asks the other one to help find a ring. While out shopping, he saves her from being crushed by something by gets injured himself. It causes him to loose his eyesight and drives his potential fiance away, but the other sister (using her love and guilt towards him) pretends to be the one that left and stays by his side while he recovers.