I couldn't figure out how to proceed with the prank after preparing everything in the hallway. Maybe I was missing another step and I wish there were some more hints what needs to be done. There were a few bugs like the music stopping completely once entering the storage room. Even with those issue, I still enjoyed it a lot. The art quality of the characters and the environment is definitely at the top of the jam, and the dialogues are fun and engaging.
I'd love to see a full, more polished version. Good job!