Another scenario could be Ichigo in a crossover with the world of Harry Potter. He could be a student at Hogwarts, and his Soul Reaper powers would surely make him stand out. He might use his zanpakuto instead of a wand for magic, and have to deal with the magical politics and mysteries of the wizarding world.
One interesting scenario could be their honeymoon. They might choose to go to a secluded place in the Soul Society that has beautiful landscapes and spiritual energy. Another scenario could be when they are decorating their new home together. Ichigo might want to add some human - world items while Rukia has her own ideas from the Soul Society. Also, when they have their first argument as a married couple, it could be over something as simple as how to train Ichigo's Soul Reaper powers better, and they have to learn how to communicate and resolve their differences like any normal couple.
One interesting character to crossover with Ichigo is Light Yagami from Death Note. The clash between Ichigo, who is a protector, and Light, who is a morally ambiguous character with the power to kill, would be very engaging. Saitama from One - Punch Man could also be a great choice. Saitama's overpowered nature and Ichigo's journey to become stronger would make for an interesting story. And what about Alucard from Hellsing? His vampire powers and Ichigo's powers related to the afterlife would create a really dark and exciting crossover.
A crossover with Harry Potter would also be cool. Ichigo could attend Hogwarts as a transfer student. He'd probably be sorted into Gryffindor due to his brave nature. And he could use his Zanpakuto to fight off dark wizards.
A cool concept might be Ichigo having to adapt to an Asian - inspired magical realm that has its own set of rules and powers. This could lead to unique character development as he tries to figure out how to use his powers in this new environment.
An interesting concept could be Ichigo crossing over into a fantasy world and being abandoned in a forest filled with magical creatures. He has to quickly adapt, learn about the new magic system, and fight against the prejudices of the native creatures who see him as an outsider. His journey could involve finding a way back home while also protecting this new world from a hidden threat.
The cultural mash - up is also cool. 'God' often represents a different cultural or spiritual concept, and when combined with Ichigo from a specific anime universe, it can create unique scenarios. Maybe it could involve different mythologies clashing or merging in the fanfiction.
One interesting concept could be how Ichigo's powers interact with the unique abilities in RWBY. For example, his Soul Reaper powers might contrast or complement the Dust - based abilities in RWBY. Maybe his Zanpakuto could have an unexpected reaction when used in the RWBY universe.
Perhaps in this fanfiction, Ichigo could cross over to a world where zanpakuto are living beings that can freely interact with their owners outside of their sword forms. His relationship with Zangetsu could take on a whole new dynamic as they explore this new world together.
In a Demon Ichigo Crossover Fanfiction with 'Naruto', Ichigo could end up in the Hidden Leaf Village. His reiatsu would be a completely new concept there. Maybe he'd team up with Naruto. Ichigo's bankai and his Hollow form would be a huge asset in the ninja world, especially when facing powerful enemies like Pain or Madara.
One interesting concept could be Ichigo crossing over into a different anime universe. For example, he might end up in a world full of magic like in 'Fairy Tail'. He could bring his unique Soul Reaper powers and have to adapt to the new rules and powers there. Another concept could be Ichigo teaming up with characters from other shows to fight a common enemy. This would lead to some really cool battle scenes and character interactions.