One great 'geralt and ciri fanfic' is 'The Path of Destiny'. It beautifully portrays their relationship as Geralt guides Ciri on her journey. The story is filled with adventure and really shows how their bond grows over time.
It should also have engaging plots. Maybe it's a story where Geralt and Ciri are on a quest to find a powerful artifact that could change the fate of the Witcher world. This kind of plot keeps readers hooked as they follow their journey and the challenges they face along the way.
One great geralt and ciri fanfiction is 'The Bond Beyond Blood'. It beautifully explores their relationship as Geralt becomes not just a protector but a true father figure to Ciri. It has some amazing action scenes and deep emotional moments.
One common theme is the development of their relationship. It could be the growth from a simple protector - protected dynamic to a more complex emotional bond like father - daughter or mentor - apprentice. For example, in many fanfictions, Geralt initially sees Ciri as a charge, but as they go through adventures together, they become closer.
Archive of Our Own (AO3) is also a great place. It has a very active community of writers who create amazing 'geralt and ciri fanfic'. The search function there is quite useful to find exactly what you're looking for.
There is a fanfiction called 'Ciri's Training'. In this story, Geralt takes on the task of training Ciri seriously. It details their daily interactions during the training process, how Geralt imparts his knowledge and skills to Ciri. Also, 'Bond Beyond Blood' is quite interesting. It delves deep into the emotional bond between Geralt and Ciri that goes beyond the typical mentor - apprentice relationship.
In a way, it is. The Witcher 3 provides a satisfying ending to Geralt's adventures, but there's always potential for more stories set in the same universe.