What's the deal with the broken leg in the end of gosick animation?

The plot of the broken leg in the ending of Gosick's animation was fictional and had not been described in novels or comics. In novels or comics, Gosick's ending was like this: Nine Cities met a mysterious girl on the road and developed feelings for her. However, due to his identity and the girl's organization, the girl refused to date him. In order to find the girl, Nine Cities left his hometown and began a journey full of danger and challenges. During the journey, he encountered many difficulties and challenges, but he persevered and finally found the girl and protected her. However, in a battle, Ninetowns was fatally injured and lost his leg. Although he finally recovered, he began a long rehabilitation training and decided to continue looking for a girl. Therefore, the plot of Ninetowns 'broken leg in the ending of Gosick's animation was fictional and had not been described in novels or comics.