the author really likes their greedy Jewish family conspiracy theory caricature, unfortunately.
I think her family is not aware of other powerful beings exceeded a power of god or they're not aware of a higher dungeon than tier 3 popping up. Since mc is the only ine who knows the logic behind of the dungeons power. They think that they can fight against it..
That's insensitivity. They must aware what is happening on the world. Appearances of Dungeon 3 tiers is not normal. What's more if the level goes high? Absolute extinction will become prominent ╥﹏╥
I'm gonna slap Jessica for being stupid and annoying at the same time. For Pete's sake, the world is nearly to its extinction yet your family values the otherworld knowledge just for the sake of power and superiority. If I was a character here, I better disintegrate Jessica. Gosh #－.－)