Summary:
“Did you already go to the hospital?” he asks. The wound he’s working on now looks like its healing has been accelerated.
.
Kakashi hums an affirmative.
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“You know you could have had them patch you up all the way, right? Chakra works a lot faster than ointment.”
Classic tropes are classic: dropping by Iruka's instead of the hospital for first aid, an assignment by the hokage pairing them together, Naruto objecting to the relationship after he learns of it - but the author writes them in such a lovely way that marks Iruka developing into a better teacher as well someone who can read the unspoken cues of someone who won't say them aloud.
My favourite exchange from this fic:
“But… He’s Kakashi-sensei.”
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“That’s integral to the relationship, yes.”
Read it here.