this might be a reach but i think loki's fond smile after mobius said "you're the god of mischief, right?" was bc no one ever liked that he was the god of mischief, no one ever liked that about him in fact it was the exact opposite and here mobius was, bringing it up casually and not being at all afraid of it. he likes loki's mischief, he likes every part of loki and he is happy to let him use his powers and not hide who he is, unlike what everyone wanted him to do his whole life and i think that smile might be loki realizing that mobius likes all of him and that for the first time in his life he truly has a friend