I agree with the sentiments above. The bittersweet is really lovely and well done. I loved this passage: this little time capsule of a room - were just about all that was left of the four boys on the wall. Dusty scarves, fading photos, a boy with James’ hair and Lily’s eyes…

...and Remus and Sirius, or some version of them.

And then the slightly unexpected hope of the ending. Very nice!