The reason why I love Ulquiorra so much is because he changed a lot through the story, he really had an amazing development and the way he saw the world and the humans was pretty interesting. I appreciate that Kubo decided to create a great character like him because I hate when a character keeps being the same all the time, when he doesn’t change for good or bad. And Ulquiorra’s story was perfect. Also I’m happy Kubo made Ulquiorra to spent time with Orihime, because she was the reason why he changed so much.
What I loved the most about Ulquiorra is that even if he was a creature without emotions
(he born in the void), he was very sensitive, he was curious, he was interested in a human woman and he actually wanted to understand her actions, her beliefs. He wanted to understand everything about her. And thanks to her, he did understand what the heart means, he understood the meaning of something so human and important like the heart thanks to her, thanks to a human woman, thanks to Orihime. She made him human. And that’s amazing.