One idea could be that Ichigo and Harrible Lemon meet in a magical forest where they have to work together to solve a mystery. Maybe there's a hidden power in the forest that only they can unlock through their combined skills.
A more complex plot could involve a prophecy that states Ichigo and Harrible Lemon are the only ones who can save both their worlds from a great evil. They initially don't trust each other but as they go on their journey, they learn about each other's strengths and weaknesses and gradually become friends. Along the way, they also discover secrets about their own pasts that are linked to the prophecy.
Well, clearly Ichigo and Harrible Lemon are the main characters. Ichigo is often known for his strong will and combat abilities. And Harrible Lemon, although not as well - known perhaps, must have some unique traits that make him an important part of the story.
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.
A possible plot could be that Ichigo and Yuzu are transported to a world made entirely of lemons. They have to find a way to get back home while facing various challenges in this strange lemon - filled land. Yuzu might use her knowledge of lemons to find food and shelter, while Ichigo uses his combat skills to protect them from the lemon - themed threats that lurk in this world.
One plot idea could be that Ichigo and Isane are paired up for a special training mission. During this mission, they learn from each other's fighting styles. Ichigo teaches Isane some of his more unorthodox moves, and Isane imparts her knowledge of traditional healing techniques combined with combat skills to Ichigo.
Maybe fem Ichigo has a different set of powers compared to Ichigo. In the fanfiction, they could train together to combine their powers in a unique way. For example, her powers might be more focused on defense while Ichigo's are on offense, and they learn to complement each other. This could lead to some interesting character development as they overcome their differences and work towards a common goal.
One idea could be exploring the inner turmoil of Ichigo as a Hollow in a new and unique way. Maybe his Hollow side starts to have different desires that conflict with his normal self.
Well, a plot could revolve around Ichigo losing his powers again but Tier being the one to help him regain them in a very unique way. Maybe she has some ancient knowledge or a special connection to a power source that could potentially restore Ichigo's strength. And as they work on this, they start to form a bond that goes beyond friendship. Also, a fanfiction could explore what would happen if Tier was somehow injured and Ichigo had to protect her while also dealing with his own inner demons and the threat of other enemies in the Bleach universe.
One idea could be that Ichigo, Rukia, and Orihime discover a strange lemon - shaped spiritual artifact. They have to figure out its powers and how it relates to the Soul Society. Maybe it has the power to enhance their spiritual abilities, but also comes with a strange side - effect that changes their relationships in unexpected ways.
One idea could be Ichigo struggling to control his new vampire instincts while still trying to protect his friends. He might have to hide his vampiric nature from his family, which adds a layer of secrecy and tension.
One idea could be Ichigo having to face new and more powerful enemies in his resurrected form. Maybe he discovers new powers that come with this resurrection and has to learn to control them quickly to save his friends.