During the school day, Adrien often had to save his restroom breaks and excuses to go to his locker for when he needed to transform so as to not raise suspicion of his constant “bathroom use” and “forgotten textbooks.” Still, even he actually slipped up on occasion. He had completely forgotten his history textbook in his locker, and he begrudgingly asked to go down to his locker to get his textbook, which was thankfully granted.

As Adrien walked down the metallic steps of the staircase, he took note of just how empty the school courtyard was during class time, even with the renovations to the school that added all sorts of assorted plant life and seating areas. He pushed the door open to the locker room, expecting the room to be just as empty. To his surprise, he heard a soft rummaging sound from the other side of the locker room.

Adrien carefully close the door, using his hand as a doorstop to silence it as he stared at the other side of the room. There was a person rummaging through a locker, and it was clear to Adrien that he had never seen this person before. Suddenly, he realized that was Marinette’s locker— some complete stranger was going through his girlfriend’s locker!