(A/N: Peter lives at the tower with May and the Avengers. May and Tony are co-guardians of Peter)
Third person
Bucky was having one of those moments. One where you become sad and just start crying. Most people would call the reason he was crying PTSD, but it wasn't really that. Bucky was in his room crying and feeling bad about all the people he killed as the Winter Solider. His sobs were fairly quiet so he thought that no one would hear him crying. But, he forgot about a certain spider.
"Uncle Bucky what's wrong?" Bucky looked up to see Peter standing in the doorway causing light to stream into Bucky's dark room.
"Nothings wrong, Peter." Bucky said.
"Tell me." Peter said.
"I was just thinking about how my arm is a Hydra weapon and I can't change that in anyway. And how I killed so many people." Bucky said.
Peter ran away causing Bucky to cry more. This sweet child was scared of him. Peter then came back with several boxes and Bucky was confused. Peter covered Bucky's arm with magnets, all different types. Letter, bubble sticker, boom box, etc.
"What dare you doing?" Bucky asked.
"You're arm is yours. It's no longer a Hydra weapon and you shouldn't think of it like that anymore." Peter said as he stuck another magnet on Bucky's arm.
"Thanks, kid."
"No problem, I have to go to school now so I'll see you after that."
"Okay." Bucky said and Peter left.
Bucky went down stairs half an hour later still wearing all the magnets on his arm. The Avengers were all giving him strange looks when Sam finally said "Hey, refrigerator! What happened to your arm?"
"Peter stuck a bunch of magnets on it." Bucky replied.
"Why?" Tony asked.
"He wanted me to always remember that my arm isn't a Hydra weapon and that I'm not the Winter Soldier anymore." The team smiled fondly at the kindness of the kid.
Did he even know how many people he made feel happy?