the_debt_of_time

Eyes wide as the spell hit him in the chest—knocking him backward and binding
his body tightly—Sirius's gaze followed Harry as he frowned down from above him
"Thank you for everything," Harry said clearly. "You're the only father I've ever
known, and you've done a good job with what you've been given. Take care of Hermione
for me. Take care of everyone." He brought himself to a knee beside Sirius's frozen body
and placed a hand on his shoulder. "This is my job, Sirius."
Our job, Sirius thought angrily as Harry walked out the door.