It could be about Rukia and Ichigo having an extraordinary connection that goes beyond their usual relationship in the original series. Maybe they start to understand each other's thoughts and feelings without even speaking, like a psychic link of sorts.
In this fanfiction, it might explore how their relationship evolves due to this special 'click'. They could start to spend more time together, not just for the sake of fighting Hollows but also to understand this unique connection. This could bring out new aspects of their personalities as they open up to each other in ways they hadn't before. For example, Ichigo might show a more vulnerable side to Rukia, and Rukia could be more relaxed around Ichigo, leading to a whole new dynamic in their relationship.
Perhaps the 'click a little too well' refers to them being in sync during battles in a way that surprises everyone around them. They might be able to anticipate each other's moves so perfectly that it seems almost uncanny. This could lead to a deeper bond between them as they rely on this newfound synchronicity.
Rukia, a Soul Reaper, and Ichigo, a substitute Soul Reaper. Their different origins and powers are likely to play important roles in the story, especially considering the 'click' they have. Their unique abilities and how they interact with each other based on those will be key elements in the fanfiction.
One possible plot could be that Ichigo kidnaps Rukia out of a desperate need to protect her from some unseen and extremely dangerous threat in the Soul Society. He might believe that the Soul Society's own mechanisms for safeguarding her are insufficient.
Well, it could be about their baby having some sort of special power. Maybe the baby inherits both rukia's shinigami powers and ichigo's hybrid powers. It could grow up in a world where it has to learn to control these powers while also facing the challenges of being the child of two very important and powerful beings.
One possible plot could be that Ichigo and Rukia are paired for a school project. They start off not getting along very well because of their different personalities. Ichigo is impulsive and Rukia is more reserved. But as they work together, they gradually learn to understand and respect each other. They might face challenges like finding a suitable topic, dealing with difficult classmates who try to disrupt their work, and finally presenting their project successfully which also strengthens their friendship.
It could be about a moment of unexpected closeness between Ichigo and Rukia in a closet. Maybe they are hiding from some danger or just stumbled into this confined space, and this leads to some deep conversations and a new understanding of their relationship.
Well, one possible plot could be that Ichigo and Rukia have to protect their baby from some new and powerful enemy in the Soul Society. Their baby might inherit some unique powers from both of them, and they have to train the baby while also keeping it safe.
One possibility could be that Ichigo is under some sort of mind - control. Maybe an enemy has found a way to manipulate his actions and he ends up hurting Rukia without meaning to. This could lead to a lot of internal conflict for Ichigo once he realizes what he has done.
One possible plot could be a post - battle scenario. After all the chaos and fighting they've been through, Ichigo realizes his true feelings for Rukia. They start to secretly date while trying to maintain their duties as Soul Reapers and protectors of the living world. Eventually, their friends find out and support them wholeheartedly. They plan a simple yet beautiful wedding in the Soul Society, with all their friends and comrades in attendance, and they live happily ever after, constantly going between the Soul Society and the living world to visit their loved ones.
Maybe Aizen has created a false asylum as part of a new experiment. He lures Ichigo and Rukia into it, and they have to find a way to escape while also dealing with the illusions and traps Aizen has set up. In the process, they could learn more about Aizen's motives and past, and perhaps even find a way to defeat him once and for all.
Well, it could be about their adventures together after the main events in Bleach. Maybe they go on a mission to a new realm and face new enemies while strengthening their bond as friends and comrades.