Yes, it can be quite popular among certain segments of the fanfiction community. Fans who are interested in exploring the relationship between these two characters in a more romantic and sometimes steamy way are drawn to such fanfictions. The contrast between Ulquiorra's dark and brooding nature and Orihime's kind and gentle personality makes for an interesting dynamic that many enjoy reading about in a love - focused and lemon - flavored story.
One popular idea in such fanfictions is that Ulquiorra, despite his cold nature, gradually discovers his feelings for Orihime. Their relationship might start from his initial captor - captive situation. He is intrigued by her unwavering kindness and her unique view of the world around her. This could lead to a slow - burning love story where he starts to protect her not just because of orders, but because of his own emotions.
Well, in a lemon fanfiction, it might involve a lot of intense emotions and passionate moments. Ulquiorra, with his complex personality, could be shown in a more tender light towards Orihime. Their love might be depicted as a forbidden or unexpected one. It could explore how their different natures, Ulquiorra being a former Arrancar and Orihime having her unique powers, come together in a romantic context. There might be scenes of them gradually opening up to each other and sharing their innermost feelings, all within the framework of the lemon - which typically implies some level of sexual tension or allure, but in a tasteful and fictional way.
Well, in a lot of fanfictions about Ulquiorra x Orihime, their relationship is a slow - burn type. At first, Ulquiorra might be indifferent to Orihime, seeing her just as a captive. But as time goes on, Orihime's unwavering kindness starts to chip away at Ulquiorra's cold exterior. Writers might focus on the small moments of connection between them, like a shared glance or a short conversation that gradually builds into a deeper bond.
The interaction is also important because it can expand the lore of the Bleach universe in a way that the original work might not have fully explored. For instance, how Ulquiorra's view of the world changes due to Orihime's presence can lead to new insights into the Hollow and Soul Reaper dynamics.
Often, fanfiction writers explore the psychological aspects of both characters. Orihime's resilience in the face of difficult situations and Ulquiorra's internal struggle with his Hollow nature can be used as the basis for their relationship development. Writers may create scenarios where they help each other grow, adding depth to their relationship beyond what is shown in the original work.
I'm not sure if there is a specific fanfiction with such a storyline. Fanfiction can cover a wide range of themes and ideas, but this particular one might be quite rare or not widely known. You could try searching on specialized fanfiction websites.
One more theme is the exploration of Orihime's strength through love. In fanfictions, she might be shown as using her love for Ulquiorra to be braver and more assertive. For example, she could stand up to those who oppose their relationship. Also, the idea of redemption for Ulquiorra through Orihime's love is quite common. He may have done many bad things in the past, but her love gives him a chance to start anew.
There might be some fanfictions out there that deal with their relationship in a non - adult way. You could try searching on fanfiction - specific websites and filtering for the appropriate rating. For example, Archive of Our Own allows you to filter by rating such as General Audiences or Teen and Up. It's possible to find a story that focuses on their relationship developing in a more innocent way, perhaps with the idea of a future family in a very PG - 13 kind of concept.
Ulquiorra might be very reserved at first, just observing everything. Orihime would likely be the one to initiate conversations and interactions. For example, she might ask him if he wants to try some fair food. Ulquiorra would probably be hesitant but might eventually give in.