Kaworu is also doing a walk of shame. Except it's more like a walk of sulk. There's no shame in sleeping over at your boyfriend's apartment and doing what you like there.

There is shame in your other boyfriend being so distracted by some moss on the ground that he forgets he promised to cook you food when you get home. How can someone care about moss when he, their beautiful angel boyfriend, is right there and hungry?

A bad boyfriend, that's who. On serious review from the Bone Lesbian Squad. Which is the shirt that Kaworu has. It's the shirt of Terrible Boyfriend(TM) who has not even noticed that his shirt has been stolen.

So instead, Kaworu sulks his way back home. Hands in his pockets, walking deliberately slow to make it clear how unfairly put out he's been over the whole thing. It would be nice if someone took notice so he could explain how cruelly he's been treated but he encounters someone and the immediate response is anything but.

"Me? You're in my way!"