The ending of the Shikimori manga is quite satisfying. The main characters reach a conclusion that feels right for their journey, and loose ends are neatly tied up.
Well, there might be characters from their clan. Since Itachi is from the Uchiha clan, other Uchiha members could play significant roles. They could be elders or other young Uchiha who are involved in the clan's affairs and in turn, affect Itachi and Izumi's story.
Their relationship would likely become more trusting. In marriage, they would have to rely on each other more. For example, Itachi might open up more about his missions and the secrets he has been keeping.
Their relationship could develop through mutual understanding. Naruto's open - hearted nature would help Izumi open up more. Izumi, in turn, would support Naruto in his duties as a village hero. They might start by sharing small things like their favorite foods and gradually move on to deeper conversations about their dreams and fears.
Yes, there are quite a few. You can start by looking on popular fanfic platforms like Archive of Our Own. Just search for 'ajin izumi and nakano' and you'll likely find a variety of stories with different themes and interpretations.
I'm not sure specifically what the 'izumi full story' is as it could refer to many things. It might be a story about a character named Izumi, perhaps from a book, movie, or game.
As there is no common knowledge about this 'izumi death novel', it's difficult to determine the author. It could be an indie author or a relatively unknown writer. Maybe it's a self - published work, which makes it even harder to identify the author without further research.