Both you and Atsumu knows you like each other even without confessing, you both know that you're definitely not just friends. However, both of you also knows that none of you have the courage to take a risk to commit, not wanting to rush things as both of you are still teens. This is why you two is in a "no-label relationship". Not a big deal, right?

"Hey, can I walk ya home today?" Atsumu asked you, leaning to the locker. "'Samu's not with us today, but we can still go at yer favorite bakery."