[A long time ago, Thor would not have noticed anything peculiar about Loki's presence or his questions. Now? Thor notices the way he rubs his hands, the way he digs his nails, his tone and his uncertainty.

He'd rather zero in on nothing than miss another sign that Loki isn't faring well.]

Because you're my brother, and I love you. [And it does him no disservice to remind Loki.] What could possibly have happened that has you seeking reassurance from me?