I vividly remember a story that starts with Percy and Carol being neighbors then falling in love. ?Fury makes her leave to help the Galaxy? It crushes Percy. He is a sheild agent but neither one knew what the other did. He ends up being propped up by Jean Grey and it's heavily implied that in won't last and that Carol will return when the story gets back to the later parts of the MCU. There's a wonderfully told story about how Jean teaches him to live again and I want to say a sibling relationship with Natasha. Please please please if you find it or if my rambling was somehow correct and you know the story let me know. Thank you, you wonderful half-bloods😁