Girlfriend's Dormitory Escape walkthrough

Your girlfriend was in a private school. You visited her in her dormitory. Then she left you there for a while.But it's a little longer. Her roommates would be back soon. It's better to leave here than to explain it. But the door was locked. How to get out here?
This is a room escape puzzle game,you need find some hidden objects and solve some puzzles to escape this room,have fun!

How to:Click items and drag it to interact .Click the magnifier in the itembar to view it.