The room's door had, unsurprisingly, already been blown off its hinges. After Harley charged in excitedly, Little Bruce glanced back at the locked doorknob. The lock hanging from it was utterly ordinary, like the metal locks on an Iron Gate in a courtyard wall. It looked as though it required the right key.
But the door was not even made of steel. It was merely an ordinary wooden castle door. Little Bruce had no doubt that a trained agent could force it open with a few full-strength rams.
This gave Little Bruce a sense of the trial's difficulty.
The tree spirit in the first stage had seemed highly dangerous, but it had too many weaknesses. It would only attack people trying to force their way through without a key. In other words, finding the key allowed them to skip the stage, and the key was likely hidden somewhere in the school. Obtaining it did not appear dangerous either.
They could either overcome force with force, find something to smash the door open, or simply blow it up with explosives like Harley had. Or they could rely on flexibility and agility, use their smaller child-sized bodies to slip beneath the tree spirit's arms, lure it into attacking the wooden door, and still get it smashed open.
As Little Bruce walked into the room while pondering this, he heard Barry cry out in alarm. Turning around, he saw Barry grab the somewhat overexcited Harley and say, "Keep that whole box of explosives away from here. This place is full of glassware. If you blow it up, we're finished!"
Little Bruce stepped over the wreckage of the wooden door and truly entered the room, only to find it filled with jars and bottles.
Tall shelves embedded in all four walls stretched to the