[Nen says that, but Yuuto can feel the instinct of concern in his stomach. He tries to nod and show some confidence, but the movement is smaller and meeker than he would like.]

I'm sorry. I should have brought some kind of medicine for you. [He nods again. This time with more confidence.] Yes, I'll be alright. I'm not awful at fighting, should it come to that. Tau is going to be helping out as well.

[he's going to be worrying so much..!]