Naruto and Kiba , being gay, both have been in a deep love with Kuna since both were little infants. They can literally give Him their everything they have.

He was their heart and so here they are. As they couldn't take it anymore they began to shout out

Naruto: "Kuna, i love you so much. Please be mine" he said with his cute voice and puppy eyes

Kiba: "no please be mine instead. I am better" he said in a desperate and urgent tone