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.
Ichigo might become more patient in these fanfictions. Tier's presence could force him to slow down and think more before acting. Tier, on the other hand, could become more open. Interacting with Ichigo, who is quite different from the people she usually deals with in the Bleach world, could make her more expressive and less reserved. For example, if they are in a situation where they have to communicate a lot to solve a problem, Ichigo's straightforwardness could influence Tier to be more direct as well.
The plot could involve a power - sharing concept. Hollowfied Ichigo, with his unique power, might accidentally transfer some of his Hollow energy to Tier Harribel. This new - found power could either be a boon or a curse for her. She may struggle to control it at first, and Ichigo would feel responsible for helping her. This could lead to a journey of self - discovery for both of them as they learn more about each other's powers and themselves.
A plot could involve Ichigo being trapped in the Hollow world and having to find a way back. Along the way, he meets other Hollows with different personalities and motives, some of whom he befriends while others are enemies. He discovers secrets about the origin of Hollows and how it relates to his own powers.
One plot idea could be that Ichigo and Halibel are forced to team up against a new, powerful enemy that threatens both their worlds. They start off distrusting each other but gradually learn to respect and rely on one another's strengths.
The combination of Ichigo and Tier is interesting because they both have such distinct personalities. Ichigo is often brave and impulsive, while Tier has her own mysterious charm. In fanfiction, this contrast can lead to really engaging storylines.
One idea could be that the reader is a Quincy and they initially clash with Ichigo due to the historical differences between Soul Reapers and Quincies. But as they face a common enemy, like a powerful Arrancar, they start to understand each other and form a bond. Another could be that the reader has the ability to see into the future in the Bleach universe and warns Ichigo about upcoming threats, and they work together to prevent disasters.
One plot idea could be that Ichigo and Eragon meet in a dimension that is a cross - between their two worlds. They have to team up to fight a common enemy that is threatening both of their universes. Their different powers, Ichigo's Soul Reaper abilities and Eragon's dragon - riding and magic, would make for an interesting combination in battles.
Maybe in the fanfiction, there's a threat that only Ichigo and Unohana can face together. They have to combine their different fighting styles, with Ichigo's brute strength and Unohana's precise and deadly techniques, to overcome the enemy. For example, they might encounter a powerful Hollow that has the ability to nullify most spiritual attacks, so they need to rely on their physical combat skills and teamwork.
Another plot could be that an ancient evil force targets Femichigo because she represents a new and unknown power in the Bleach universe. Ichigo vows to protect her at all costs. Along the way, they discover secrets about their connection that were hidden by the Soul Society, and they have to fight against not only the external threat but also the political intrigue within the Soul Society.
One possible scenario in such a fanfiction could be that Hollowfied Ichigo and Tier Harribel are forced to team up against a common enemy. Their combined powers, with Ichigo's Hollow - influenced strength and Harribel's own abilities, could create a very interesting dynamic. Maybe they start off as reluctant allies but gradually come to respect each other's power and determination.