Hello and thank you for your comment!
For clarity, I'll address each topic separately.
Naruto hairstyle - Our game's original timeline only extends up to "The Last", and it won’t reach Boruto. However, if we decide to venture into the Boruto era in the future, we'll certainly consider that detail.
Death of main or romance partner - Our story is crafted to handle any type of death that we deem necessary to incorporate. This includes the possibility of a romantic partner's death or even that of the protagonist.
+18 Content - We haven't yet outlined or planned anything regarding +18 content, making it challenging to address related questions at this time. However, I can mention that we plan to offer a paid DLC, converting the game to a +18 version, allowing players to engage in relationships with any eligible character in our universe.