Definitely. The previous installments of Demon Slayer Hinokami Chronicles have been great, so the new story has a high chance of being just as good or even better. With new plot developments and potential improvements in graphics and gameplay, it's a great addition to look forward to.
I think we can look forward to more in - depth exploration of the existing characters' backstories. For example, we might learn more about Tanjiro's family history that we haven't known before. And there could be new forms of combat techniques, perhaps some ancient ones that are rediscovered in this new story.
Nezuko is initially 12 years old in the manga. As the story unfolds, her age doesn't change significantly in a traditional sense, but her character development is quite remarkable.
A simple Nezuko and Zenitsu fanfiction could be that they go on a journey together. Along the way, they encounter other demon slayers who are initially skeptical of Nezuko. But Zenitsu stands up for her, explaining that she's different. This shows the depth of their friendship and how Zenitsu has come to trust Nezuko completely.