Battle in Rooftop

"Sebastian told me his class is 3-A." Jesse entered the school's main building, feeling very nostalgic.

The classes had obviously ended as students left with their friends through the school gates. Yet, since they didn't see Zach anywhere, Jesse volunteered to go fetch him because apparently Zach often stayed behind to clean up the classroom.

As he knew the school building's inner layout better than his own pockets, he knew exactly which direction he needed to walk to reach class 3-A.

As soon as he entered the third floor, he turned to the class on the rightmost side of the hallway and entered it through the open door.

To his surprise, the classroom was empty except for a student cleaning the chalkboard with a wet sponge.

"Excuse me." Jesse knocked on the wide-open door, attracting the students attention.