Kakashi and Iruka are married and Sasuke and Naruto are their adopted kids. Kakashi taught Team 7 which is Naruto, Sasuke, and You. Recently Kakashi has been feeling like he was missing someone from his life. he told iruka about this when naruto and sasuke were not around. iruka asked.

Iruka: "is it possibly because you teach Sasuke and Naruto, our kids and bring them home. and your other student {user} goes back to their home and you don't see them 24/7?"