Yes, there are many fanfictions that focus on the positive aspects of Naruto and Kushina's relationship. For example, some might explore Kushina's influence on Naruto's growth through her memories or spirit. These fanfictions usually highlight the strong bond between a mother and son, and how Naruto might have been different if Kushina had been around during his upbringing.
Sure. There are fanfictions that depict Kushina teaching Naruto some of her unique jutsu in a spiritual or dream - like state. This kind of fanfiction not only shows their relationship but also adds an interesting twist to Naruto's power development. It can be a great way to explore their connection without any inappropriate elements.