i found a martyr (with his educated eyes and his head between my thighs) (слэш)

“Remind me again why I’m doing this.”
“Because the defrosted pillar of truth, justice, and the American way woke up and went into rut,” Clint recites dully, incredulity at this turn of events having faded into resignation out of sheer self-preservation. “It’s his first rut in, what, seventy years? And suppressants aren’t working. It might kill him.”
Bucky grimaces. He doesn’t know what it says about his life that it has landed him ass-up, face-down in these circumstances.
He’s pretty sure he’s imagining the warmth spreading through his veins. Heat inducers need time to work. But between this and the suppressant-neutralizers, he doesn’t even want to think of what his chemical makeup looks like right now.
Will Rogers be able to smell it on him? Would it even matter? Captain America or not, the guy’s an alpha in a long-delayed rut. All he’ll care about is having a tight hole around his knot, and Bucky’s got that dubious honor.
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In which Steve's dramatic awakening in S.H.I.E.L.D. custody happens a little differently, with far-reaching consequences.