In the fanfiction, the plot might involve Naruto being injured on a mission near Iwagakure. Kurotsuchi takes care of him during his recovery. During this time, they have deep conversations about their lives, dreams, and the future of the ninja world. They find they have more in common than they thought. As Naruto heals, their bond grows stronger, and they start to develop feelings for each other. This leads to them getting married, with the whole ninja world celebrating the union of Konoha and Iwagakure.
One possible plot could be that Naruto, during his travels as Hokage to maintain peace among the villages, frequently interacts with Kurotsuchi. They start off as comrades in diplomatic meetings and joint missions. Over time, they realize they share common goals for their respective villages and a mutual respect for each other's strength. Naruto's kind heart and Kurotsuchi's no - nonsense attitude create an interesting dynamic. Eventually, they fall in love and decide to get married, uniting their villages even closer in friendship and cooperation.