In that case, holding him like this wuold be uncomfortable for both of them for ten minutes. Riou was a soldier, but unless he was fighting an enemy or under orders, he had no reason to let a civilian suffer. Doppo is a civilian right now.

And so, he tosses him over his shoulder like a sack of potatoes instead of holding him in front of hm. He thinks getting a cup of coffee would be good for both of them, so that's where he's going. He doesn't share this information, but he plans on making the about eight minute walk there (well, eight if he walks slowly) to spend the time.