the_debt_of_time

James frowned and slumped forward against the table. "The only thing you can
make with onion juice is a fungal removal potion."
Slughorn grinned as though that were the whole point. "And it's quite easy to make
too. I hope you're up to the task.
James glared at the professor before sullenly staring down at his ingredient and
huffing.
Slughorn placed the next bottle in front of Peter. "Mr Pettigrew."
Peter paled as he read the label. "R-Rat spleen?"
The Marauders all snickered audibly, and even Mia chuckled silently to herself.
"Yes, it's quite common in shrinking solutions. You seem to be rather proficient at
the brew; I assume you'll do just fine." Slughorn grinned and moved on. "Mr Lupin," he
addressed Remus, who still looked annoyed about being at the bottom of any class.
Remus eyed his ingredient as it was placed in front of him with a look on his face
that said he was not amused in the slightest. He glanced between the other three Marauders
as well as Mia, all of whom looked perfectly innocent.
"Moonstone, sir?"
"Yes," Slughorn jovially replied. "When in powdered form it can create a lovely
Draught of Peace, but be careful. It's also known to be an active ingredient in love potions."
He continued to give a good belly laugh while Remus blushed red.
Sirius laughed quietly. "Careful with that moonstone there... Moony."
Mia's eyes lit up at the nickname, and she turned to stare at the boys, all of whom
looked mildly amused at Sirius's joke, except for Remus, who turned and punched him in
the shoulder.
"Shut up, Padfoot," he growled.
She knew that the boys had begun their Animagus training, but despite the many
rat jokes at Peter's expense, she had not realised that they were already so far along in their
instruction that they had discovered all of their animal forms and created the lifelong
nicknames that would accompany them. She smiled proudly at their progress, which only
made her realise that she had originally wanted to follow their lead into Animagus
training—on her own at least—and she had barely even begun the meditations to start it.
Thankfully, the boys were illegally researching all on their own, while Mia already knew the
process after she had read a book on Animagi training following the war.