Classrooms: colour shows the overpowered meter if your powerful to go into the classroom if door is white it’s not that overpowered it just tells you what you can do here if the door is pink it means it will teach you the different kinds of exes, if you do listen well and focus you’ll feel you’ll get power but not that much tho. If it’s a faded red. It’s the same stuff but rare like spider exes or other types, if it’s red that means you’ll get more power but tons.