One possible plot could be that Ichigo and Jackie meet in a strange, otherworldly setting. Maybe they are both on a quest for a powerful and rare item. They start as rivals, each thinking the other is after the item for the wrong reasons. But as they face various challenges together, they begin to understand and respect each other, and eventually form a strong bond.
Perhaps Ichigo and Jackie are from different clans or groups that are usually at odds. A series of events forces them to work together. For example, a common enemy emerges that threatens both of their worlds. They have to combine their unique skills - Ichigo's combat abilities and Jackie's special knowledge or powers - to defeat this enemy. Along the way, they develop feelings for each other.
It could be a story where Ichigo accidentally travels to Jackie's dimension. At first, he's disoriented and Jackie is suspicious of this strange newcomer. But as Ichigo tries to find his way back home, Jackie starts to help him. They explore Jackie's world together, encountering all kinds of interesting creatures and situations. During this time, their relationship deepens from acquaintance to friendship and then to something more romantic.
A powerful sorcerer could be the main antagonist. This sorcerer might be after the same power source that Ichigo and Jackie are either protecting or trying to use for good. The sorcerer could be using dark magic to create chaos in their world and trying to stop Ichigo and Jackie from achieving their goals.
In an 'ichigo crossover lemon fanfiction', perhaps there is a curse that turns Ichigo's world into a lemon - filled landscape. He has to cross over to different dimensions to find the source of the curse. Along the way, he meets various characters who are either affected by the lemon - related changes or are trying to stop it. His sword skills could be combined with lemon - related magic or abilities that he discovers during his travels.
One possible plot could be them adjusting to married life while still dealing with the spiritual world threats. Maybe Ichigo is trying to balance his duties as a protector and a husband, and Yoruichi is using her experience to guide him in both aspects.
One possible plot could be that Ichigo and Yoruichi are thrown into an alternate dimension where they have to team up to find a way back home. Along the way, they discover new powers within each other and face powerful enemies together.
Well, it could be about a journey where Ichigo and Senna discover a hidden lemon grove and it becomes a special place for their relationship to develop. Maybe they share some deep conversations there.
The plot could revolve around a love - hate relationship. Ichigo, with his sense of justice, might be appalled by some of Cersei's actions at first. However, Cersei could be intrigued by Ichigo's power and different values. As they interact more, there could be a series of events that force them to rely on each other, like a looming war in Cersei's world that Ichigo gets dragged into. Their relationship could then develop into something more than just animosity, with elements of respect and perhaps even a strange form of love growing between them.
Maybe Ichigo is secretly a girl because she's on a secret mission. In the fanfiction, she could be a spy or an undercover agent. Her guise as a boy has allowed her to infiltrate certain groups or places. When her true identity as a girl is discovered, it throws the whole mission into chaos, and she has to find a way to salvage it while dealing with the personal relationships that are affected.
One possible plot could be that Harry Potter's long - lost cousin somehow ends up in the world of Bleach. Maybe they have some unique magical abilities that are a blend of the wizarding world and the spiritual powers in Bleach. They could team up with Ichigo to fight against a common enemy, like a dark wizard who has also dabbled in the forces of Hollows. This would bring together the magic of Harry Potter and the action - packed battles of Bleach in an interesting way.
Well, it could be about Hollow Ichigo being transported to the DC universe and getting involved with the Justice League. Maybe he starts off as a threat they have to deal with, but then they realize he's more complex and might end up working together against a greater evil.
One possible plot could involve Ichigo's spiritual energy causing a ruckus in the DxD world. His power might be misinterpreted, and he has to prove that he's not a threat. At the same time, he could learn some unique abilities from the DxD characters, and they from him. For example, the devils in DxD might be interested in Ichigo's zanpakuto and its powers, while Ichigo could gain some knowledge about magic from them.