James leaves to go on an Order mission, and it's Sirius' turn to be with Lily.

"Her cries began to subside, and she struggled to catch her breath. When she spoke, she hiccupped, saying, "W-why is s-s-she so…s-so cruel...?" And the thought of her sister broke the early dam Lily had begun constructing, as she gripped his hair more forcefully and let out another heart-breaking sob." One-shot.

"Sirius felt ill, his head woozy and his vision dizzy, as he sacrificed one last glance at James' torn expression, and, blinking back the tears with all his might, he retracted his right fist, and while imagining Remus in his mind, brought his punch barreling straight into James' gut." Rated for language.