Astronomy In Reverse (слэш)

A year after the Winter Soldier failed his mission in DC, Bucky Barnes is doing his best to stay under the radar from both Hydra and Steve Rogers. His hope for a peaceful day-to-day life in limbo goes awry, however, when he meets Queens’ newest hero; a pure-hearted kid with a death wish and a ridiculous pair of red and blue pajamas.
The last thing Steve expects when he finally tracks Bucky down is that, not only has the man been living in Queens all this time, right under his nose, but also that, in the two years since they last saw each other, Bucky somehow acquired a kid.
Alternatively: How Peter Parker effectively fucks over Bucky Barnes, and also totally saves him.