Well, XOXO is purely fictional. It's the imagination of the writers and not rooted in any true story. The plot and characters are crafted to entertain and engage the audience without any real-life basis.
There's also 'Naruto and Kushina: Unseen Connections'. This fanfic focuses on the untold stories between them. It might include things like Kushina's memories that Naruto discovers and how those memories shape his understanding of his family. It's a really interesting read if you like exploring the family aspect in the Naruto universe.
If you know some Naruto fanfic authors, you can ask them directly. They usually have a wide network of other authors and fans. They might be able to recommend some great 'Naruto xoxo Kushina' fanfics that are not as well - known but are still really good. You can also subscribe to newsletters or blogs dedicated to Naruto fanfics.
As of now, the Genshin manga is not finished. The story is still evolving and there's more to come for fans to enjoy. The creators are taking their time to develop a rich and engaging narrative.
There's no definite answer yet. It might continue if there's enough demand and the creative team has more story to tell. But it could also stop if they feel they've completed the story arc.
There is a Genshin Impact manga available. It brings the game's world to life on the page with beautiful art and engaging storylines. It's a great companion to the game.