Well, 'A Time - Twisted Love' is a popular ichigo x rukia time travel fanfiction. In this story, a mysterious force sends them on a time - traveling adventure. As they travel, they discover things about each other that they never knew before. Also, 'Time Warp of Souls' is worth reading. It delves deep into the consequences of time travel on their souls and how they struggle to keep their connection alive throughout the time - jumping chaos.
One interesting plot point could be how they interact with their past or future selves. For example, in some fanfictions, Ichigo might meet his future self who has different views on his relationship with Rukia, which causes him to reevaluate things. Another is how they deal with the changes in the timeline. If they accidentally change something in the past, they have to figure out how to fix it without ruining their relationship.
They could time travel to a period in Soul Society's history when there was a great war against a powerful enemy. Ichigo's modern fighting skills and Rukia's knowledge of Soul Society could be combined to change the outcome of the war. Or perhaps they travel to a time when Hollowfication was first discovered. They might be able to prevent some of the tragedies that occurred as a result of it. Also, they could time travel to an era where Quincy were more powerful and had a different relationship with the Soul Reapers. This could lead to new alliances or conflicts in the story.
If they travel to a time when the Quincy and Soul Reapers were at peace, their relationship could develop in a more carefree way. They could explore the different cultures together without the threat of war. However, if they go to a time when there was a great divide between the two groups, they might have to hide their relationship or even be on opposite sides at first. But as they discover the truth behind the conflict, they could work together to bridge the gap, which would enhance their relationship. In a time closer to their own but with some changes, like if Ichigo was more powerful from the start, Rukia might have a different kind of admiration for him, and their relationship could shift from a more mentor - student type to a more equal partnership faster.
Rukia, on the other hand, can be developed by exploring her cultural background more. Since she's from a different world, her reactions to the more 'lemon - like' or romantic situations could be influenced by her Soul Reaper upbringing. For example, she might initially be more reserved but then gradually open up as she falls deeper in love with Ichigo.
One popular theme is adventure. Writers often create new adventures for Rukia and Ichigo, where they face powerful enemies together and their relationship deepens through these challenges.
The new addition to their family could also make them more open about their feelings for each other. They might realize how much they truly care for one another while watching their baby grow. This could lead to more affectionate moments between them and a more solid romantic relationship.
In Ichigo x rukia x orihime fanfiction, Ichigo is typically a complex character with a lot of depth. His relationships with Rukia and Orihime are multi - faceted. Rukia might be shown as a strong - willed and capable partner for Ichigo in the fight against evil. Orihime is usually the one who provides a more tender aspect to Ichigo's life. Fanfiction writers may use different scenarios, like battles or moments of self - discovery, to explore how Ichigo interacts with both Rukia and Orihime, and how their relationships develop over time.
Another plot could be that there's a powerful enemy who tries to use Rukia and Ichigo's feelings against them. They have to fight not only the external threat but also their own growing desires for each other, which leads to some tense and steamy moments in the fanfiction.
You can try websites like FanFiction.net or Archive of Our Own. They have a large collection of fanfictions including rukia x ichigo ones. Just use the search bar on these sites and type in 'rukia x ichigo' to find relevant stories.