Well, Ichigo might become more empathetic. Knowing about his parents could give him a deeper understanding of his own identity and powers. For example, if he discovers some hidden abilities his parents had, he could strive to master them, leading to new power - ups. Also, it could make him more protective of his remaining family members.
He could find out that his parents were part of a secret group within the Soul Society. Maybe they were working on some top - secret mission that was never revealed. This would make Ichigo wonder about his own role in the Soul Society and if he has a similar secret mission to fulfill.
One possible fanfic could be where Ichigo discovers new and enhanced Quincy powers that he didn't know he had. He might struggle to control them at first, causing some chaos in the Soul Society. But as he trains and learns more about his Quincy heritage, he becomes a more formidable force against the Hollows and other threats.
One possible fanfic could be about Ichigo going to a hot spring to relax after a tough battle. He might meet some old friends there, and they could share stories and memories while enjoying the warm water.
One possible fanfic could be where the fullbringers use some sort of spiritual power to brainwash Ichigo. Maybe they want to turn him against his friends in Karakura Town. They could manipulate his memories of his battles and his relationships, making him believe that his friends are actually his enemies. This would lead to some really intense fight scenes as his friends try to break the brainwashing and bring Ichigo back to his senses.
In a hot - spring - based Bleach fanfic with Yoruichi and Ichigo, Yoruichi could use this opportunity to teach Ichigo some new skills. Maybe she shows him some secret techniques related to his spiritual power while they are in the relaxing environment of the hot spring. Ichigo would be eager to learn, and their relationship could grow stronger as a mentor - mentee type of bond forms. The hot spring serves as a backdrop for this unique interaction between the two characters.
There's a fanfic called 'The Bond of Hearts'. It's set in an alternate universe where Ichigo and Orihime are childhood friends. It shows their relationship evolving over the years. It delves deep into their emotions and how they gradually realize their love for each other. The character development in this fanfic is quite engaging.
Ichigo would probably be devastated. His trust in relationships would be severely shaken. He might become more withdrawn and focus even more on his battles and training, using it as an escape from the pain of the betrayal. He could also become more cynical about love and people in general.
In this fanfic, perhaps it focuses on the friendship between Chappy and Ichigo. Chappy might help Ichigo in some unexpected ways. For example, Chappy could use her unique abilities to guide Ichigo through a difficult part of Hueco Mundo. Their bond could also be a source of strength for Ichigo during tough battles, giving him an extra boost of motivation.
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.