Right, so, here was how classes had gone for Celia and Maru, ever since Maru had found Celia that night in the woods:

Celia would get up, take her stance, and Maru would mutter the curse under his breath, do his best to not get caught doing the wand movements. Mostly, it just looked like he was practicing, which made sense, because he wasn’t the most brilliant wizard in the world. It had all been sliding so far. He didn’t always hit the spell right on target, but as long as it looked like Celia cast it--things were going swimmingly. 

They were working on the Impediment Jinx now, outside on the field during Defense Against the Dark Arts. Professor Foley was having things rocket towards them and it was their job to slow them down. The students were lined up in a row, Maru just behind Celia. Leaning forwards, he whispered in her ear.

“It’s alright, I’ve got you. I’ve been practicing.”