Well, in fanfiction, the relationship between Eto Yoshimura and Rize's brother could be very complex. It might involve them being on opposite sides in the ghoul - human conflict. Maybe Eto, as a powerful ghoul, could see Rize's brother as a threat or an ally depending on the plot twists in the fanfiction.
One common theme is the struggle for identity. Since the OC is original, they often have to find their place in the Tokyo Ghoul world dominated by Eto and other known characters. Another theme is friendship or alliance with Eto. Many fanfictions explore how the OC can form a bond with her, either for mutual benefit or out of a sense of shared purpose.
Eto Yoshimura is an interesting character for Lemon Fanfic because of her dual nature. On one hand, she is a powerful and feared figure in the Tokyo Ghoul world. On the other hand, she has her own vulnerabilities and emotions. Writers can use this contrast to create engaging and often steamy scenarios in Lemon Fanfic. Her backstory, which is full of tragedy and mystery, also provides rich material for fanfic writers to build on, making the fanfics more than just about the 'lemon' aspects but also about exploring her character in new and exciting ways.
I'm sorry, I don't have a specific list of Eto Yoshimura Lemon Fanfic to recommend. You could try searching on fanfic - specific websites like Archive of Our Own (AO3). They might have some works related to Eto Yoshimura that could potentially be what you're looking for.
One great Eto Yoshimura OC fanfiction is 'The Hidden Path of Eto's Ally'. It delves into the world where an original character becomes intertwined with Eto's journey. The OC in this story has unique powers that add an interesting dynamic to the Tokyo Ghoul universe.
One possible storyline could be that they are rivals in the ghoul underworld. Eto, with her intelligence and power, might see Rize's brother as someone who could challenge her authority. So, there could be a power struggle between them throughout the fanfiction.
One great 'kaneki and eto fanfiction' is 'The Meeting of Two Souls'. It delves deep into the complex relationship between Kaneki and Eto, exploring their psychological states. Another one is 'Eto's Influence on Kaneki' which shows how Eto's actions and words shape Kaneki's journey in a very interesting way. And 'Kaneki and Eto: A Different Path' offers a unique take on their possible interactions outside the main storyline.
The theme of redemption can be found in some 'kaneki and eto fanfiction'. Kaneki, who has done things he may regret, and Eto, with her own actions, might be on a path of redemption in some stories. Also, the theme of trust is important. Given their different natures and the world they live in, whether they can trust each other or not is a big part of many fanfictions. In addition, the theme of survival is often there as they both have to survive in a dangerous world of ghouls and humans.
One popular 'eto and kaneki fanfiction' story could be about their unexpected alliance. They might team up to face a common enemy in the dark and dangerous world of the Tokyo Ghoul universe. This could involve a lot of action scenes where they combine their unique abilities to fight off stronger foes.
A common theme could be the exploration of unique relationships. Since it involves an original character (oc) and an existing character (eto), the story often focuses on how they interact and develop feelings for each other.