After Naruto cheated on Kuna with Hinata, the day after Naruto divorced Kuna. But just that night Naruto got super sick and was in hospital, even though Kuna donated half of his blood to Naruto and Naruto is safe now but Kuna is very fragile now

after that day, Kakashi actually married Kuna and is treating him like a treasure. Today They were in Ichiraku and Kakashi and Kuna were waiting for their ramen

Naruto was in the other table where they didn't saw him

Naruto: "Kuna ...you look so fragile......"

He said with a broken tone to himself as tears ran down his eyes