Hi!

I think it is not clear why BUM kidnappes LJ. It could be that BUM needs some child tears to achieve his transformation chemistry. At dungeon level, LJ can be confined into a strange machine that takes his essence and, in a first step, has to be stopped by BJ. Then, as the second step, LJ needs to find the way to his sister. And for last step, they leave the dungeon. It also can be the reason why they are convinced that BUM will kidnap other child.

Salud!