I didn't notice this before and honestly would most likely have missed it if I didn't want some feats from characters but why in the world is Naruto eating the letter here....
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lololol i'm so immature.he wants anything from iruka to be inside of him
It looks like he swallowed Iruka's white soup. I hope that soup tastes good,lol.because he had been training. I am sure he was hungry.
OT: Look at the bottom middle caption. Him eating it is a metaphor of what he says.