Chapter 1: Pranks

"The door's locked."

"What?" Marinette's voice loudly echoed off the walls of the empty classroom. Well…it was empty…except for one other person.

"It's locked. It won't open. I've tried." Adrien sighed gesturing to the doorknob.

"Let me try." She stepped to the door of the classroom and twisted the knob.

He was right. It was locked like so. And she so knew who was behind this…

"What day is it again?" She asked him.

"Uh…Wednesday?"

"No…what I mean is what's the date."

"April 1st. Oh." He sighed as the realisation struck him, "Alya and Nino?"

"Definitely Alya and Nino." Besides, who else would be behind this? From day one, they'd been behind the pair. Surely, they'd take advantage of this perfect opportunity when it was only them in the classroom.

Marinette was dragging behind in Maths and she really needed some help. Adrien was kind enough to offer her that help as it was a free period (everyone else had gone out to see Alix and Kim's prank war). Supposedly, their wonderful friends decided it would be funny if they locked them in. Maybe a few months ago, she wouldn't have been against it. But…things had changed…

Adrien was with Kagami now. And she was trying to get over her feelings for him. That was trying to be his friend. She really was getting better at it. Her stammer had gone away, and she could talk confidently around him. But locking her in a room with him wasn't going to do her any favours…

"You don't look so happy?" Adrien asked a hint of disappointment to his tone.

"Oh…um…no…it's just that…I-I promised Alix that I'd be there in the last 15 minutes to cheer her on." It wasn't a lie. Though, 'promise' was a strong word, "but it's fine, I bet that she was on in this prank too!" Seemed like her.

He didn't look reassured though as he anxiously stared at her with a strain in his smile.

Oh no…did she just tense the mood? Ugh…whenever it came to her feelings to him, things would become awkward. Maybe that was another sign that they were just meant to be friends.

She better fix this. After all, that's what good friends did…right?

"Until we wait for a teacher to uh…get us out of this mess. Why not do something fun? It is April Fools Day, right?" She smirked playfully as his shoulders seem to relax and a different emotion crossed his eyes.

"What do you have in mind?" A wide smile plastered his face. A smile! Yes! That's a good sign!

"Absolutely nothing." Her smirk grew wider as she waited for the bomb, "though there might be something on your back. You might want to check." She finished with a wink (That's not too much, right?).

His eyes widened as his head and hands turned to his back whilst she chuckled in amusement. He managed to catch the culprit though as he pouted at the funny cartoon fish that was plastered behind him.

"Poisson d'avril, huh? Very funny." He muttered as she broke out into laughter.

"Even took a pic! You didn't even notice!" She said in between chuckles as she took out her phone to show him a pic of a very focused Adrien reading his book inconspicuous of the fish on his back.

"Please don't tell me you didn't post that online!" He asked quite panicked

"No. Of course not." She reassured him as he sighed in relief, "I would never to do that to you."

Adrien smiled at her words and gazed at her intently. Another emotion stirred in his eyes. One that kindled a fluttering feeling inside her. A fluttering feeling that wasn't meant to be there…

"Watch out though!" She stated rather loudly breaking the moment they weren't supposed to have, "I'll be that friend who'll embarrass you in front of your future children and grandchildren! This picture will have a great audience!"

"That's great, all right." He said very sarcastically, "You better watch out too then. I'll come back at you! Soon enough, I'll have something to show to your future children and grandchildren. It'll have just a bigger audience." He smirked satisfied with himself.

"Don't look so pleased with yourself yet. I'm not going to let you take a silly picture of me now." She bantered proudly, "Besides, you still haven't pranked me today. And I won't let you either. Currently, I'm on the winning side." She pointed towards herself and raised her head in pride. Pranking her was going to be a challenge for him.

"Hmm…that's such a shame…" Adrien said surprisingly with both sarcasm and assertiveness, "But what if I already pranked you." He smirked as he knew that the bomb was now in his hands.

Her eyes widened as she frantically waved her hands around; looking behind her shoulders too, she even began to search her hair. Meanwhile, Adrien chuckled at her and crossed his arms in pleasure. The tables had turned quite drastically.

"B-but there's nothing on me?" She questioned in confusion after she was done with The Big Prank Search.

"Who said it was about anything on you? Pranks are only fooling people, right?" He shrugged almost innocently even with that smug smile on his face.

Her mouth was half-open as she stared at him in befuddlement as he side-glanced at her and stepped towards the door.

Adrien twisted the knob of the door several times and drew the door agape, taking a step out of the room as he turned himself towards her.

"The door wasn't locked from the outside; it was locked from the inside. Now, we're even, Nette." He smugly stated and winked at her.

"Oh." She deadpanned. Marinette. exe had stopped working.

Her reaction indulged him as his smirk grew wider and he left the room in a triumphant manner.

Marinette. exe stood glancing after him, blinking and blinking, her brain going on reboot.

Oh. Oh! OH! OH!

Heat invaded her face as she understood the implications of his prank.

Adrien had locked them in! Not someone else! He locked them in! He locked them in with only the two of them in the room! Only the two of them! Just him and her!

Not that he'd ever understand why it was so important that it was just him and her…

This oblivious boy was going to be the death of her. She knew it.

He was going to be the absolute death of her ; )