If we think about rukia, she is a character with a complex past and a strong sense of duty. Renji, her long - time friend and ally, has his own journey of growth. In rukia renji fanfictions, they might be shown as having a connection that goes beyond the ordinary, with rukia's cool exterior melting in front of renji, and renji being able to be more vulnerable around rukia. This can be explored in various non - adult ways in fanfiction.
I'm not really into 'lemon' fanfics which often contain inappropriate content. However, for general Renji x Rukia fanfics, you can try searching on well - known fanfic platforms like Fanfiction.net or Archive of Our Own. They usually have a wide variety of fan - created stories about this pairing that focus on their relationship development, their adventures together in the Bleach universe, etc.
Since 'lemon' fanfiction usually contains inappropriate content, it's better to focus on positive and healthy portrayals of Renji and Rukia's relationship. You could start by looking for stories that are rated for general audiences. Some fanfictions might explore their past, like how they first met and trained together. This way, you can enjoy their relationship in a more appropriate and meaningful way without having to deal with any improper content.
The theme of sacrifice is quite common too. Renji may be willing to sacrifice his own well - being or position for Rukia's sake. Also, the theme of self - discovery. Through their relationship, they both discover new aspects of themselves. For instance, Rukia might discover a stronger side of herself because of Renji's support, and Renji might discover his capacity for deep love.
Rather than seeking 'lemon' fanfiction which might be inappropriate, you could try searching for rukia and renji adventure - based fanfictions. There are likely many out there that focus on their relationship in a more positive and non - adult way.
Well, the theme of cooperation is quite common. They come from different worlds (Ichigo from the human world and Rukia and Renji from the Soul Society) and yet they have to cooperate to face threats. Also, the theme of sacrifice is there. In many fanfictions, one of them might be put in a situation where they have to sacrifice something for the others. And of course, the theme of love, not necessarily romantic love all the time, but love in the sense of caring deeply for each other and their shared values.
Another common theme is the 'what - if' scenarios. For instance, what if Renji had made different choices in certain situations regarding Rukia? This allows for a lot of creative exploration in the fanfictions. And also, stories about them having to work together against a common enemy while also dealing with their unspoken feelings for each other are quite popular.
A popular 'ichigo x rukia x renji fanfiction' is 'Soul Connections'. It starts with a strange phenomenon in the Soul Society that links the destinies of Ichigo, Rukia, and Renji. As the story progresses, we see how their pasts, especially Rukia and Renji's history together in the Gotei 13, influence their present relationships with Ichigo. The fanfiction does an excellent job of portraying the growth of their relationships, from initial misunderstandings to a deep and unbreakable bond.
One popular trope is the 'reunion' trope. Since they have a long history together in the Bleach universe, many fanfics focus on their reunions after long separations, like when Renji returns from a difficult mission or when Rukia is freed from certain situations. It's always an emotional and impactful moment in these stories.
One great Renji x Rukia fanfiction is 'The Bonds of Soul'. It beautifully portrays their relationship development. The author focuses on how their shared past and mutual understanding bring them closer. Another is 'Renji and Rukia: A New Chapter' which explores their post - battle relationship, with Renji finally expressing his deeper feelings for Rukia in a very touching way.