Disclaimer: Do I own? Not a chance!
AN: Set during the episode Zombiezhou. Contains spoilers for said episode.
Mrs Bustier gasped in horror as she saw a dreaded black butterfly land on Marinette's earring and Marinette staggered away from her. A familiar and terrifyingly familiar outline appeared on Marinette's face and Miss Bustier grabbed Marinette by the shoulders.
"Fight it Marinette. You're better than this! You can fight him, be better than your anger. Yo-"
There was a sudden flash of light and suddenly, in Marinette's place, stood Ladybug and hovering above them was the black butterfly.
"Marinette?" Miss Bustier asked uncertainly, but Ladybug glared up at the akuma fluttering away above them.
"Alright little akuma," she began, her yo-yo spinning. "It's time to purify you from evil."
As she always did, she captured the akuma and purified the black butterfly. As she had done countless times before, she waved goodbye to the white, purified butterfly. And then she turned and faced her teacher, who chuckled slightly with amusement.
"I guess that explains why you're always missing or late," she said and the superheroine blushed. She held up her hand. "I know, don't tell anyone, right?"
"Merci," Ladybug said as she transformed back into Marinette.