Disclaimer I don't own Marvel.
Writers Notes; Don't read unless see Infinity War and End Game as this story contains spoilers and plot points.
Thor knew they were on a tricking clock, but he knew he would probably never get another change to do this. He made his way down to the cells of Asgard, and there in his cell was Loki talking to their mother.
"Loki?" Thor called out, the imagine of their mother disappeared as the frost giant glazed over and was first puzzled by his brother's appearance, and then smirked.
"Come here to gloat? Or is my sentence caused you grief," Loki smiled, Thor kept himself calm after Loki's remake, while part of it was true he felt guilt over failing to killing Thanos. Loki and countless others deaths weight deeply on him.
"I just wanted to see you brother."
"Brother? We aren't brothers. I am nothing but Odin's little..." Thor cut Loki off.
"Father could have just let you die, but he saved. And you could have been King if you weren't a spoiled little brat, because it just a pointless title its meanless."
"What happened to you brother, did that little mud puddle of a world change you that much? And spoiled brat? I recall you always wining to Odin for ever little thing." Brother felt like the worse insult well it came from Loki.
"I grew up, and you can still. Its sad because you can doing great things, if you just give up this pity little childish grudge. " Thor, thought back to their time saving Asgard from there sister. Father must believe Loki can change or he would have locked him away like he did to Hela. He remembered when Thanos killed Loki in front of him.
"Whatever you say dear brother," Loki just smiled and tiled his head, as a yelling could he heared.
"Thor! We have to leave!" Rocket came over to Thor being chanced by guards, he had the Infinity Stone in his hands.
"Loki whatever path you pick, you'll always be my brother." Thor took one last glimpsed at Loki, as if to remember every last detail of his face before returning back to the present.