For centuries, Nnoitra has always hated Nelliel with every fiber of his being, he didn't exactly understand why but all he knew was their was something about her that just driven him to hatred.. after his defeat against Captain Zaraki, for some reason Nelliel decided to bring him back to Las Noches and heal him, however he doesn't show any gratitude towards her, instead he just continues his disdain for her until she offers to train him, to help him become stronger against her, but things take a turn when his feelings of fury for her goes away, as he begins to feel something that wouldn't ever suspect to feel.