Ticking Time Bomb

The System did not send her any notification that specified the beginning of her fight with the Boss.

If the System initiated the fight, then at least she would be able to know the Boss' identity and take suitable precaution measures.

She reckoned that she had to actually land a blow on the monster for it to consider her to be in a fight with this seemingly immobile monster.

Although it did not seem to be aggressive, it must be high in defense just judging by its physique. If they randomly started a fight, the monster might react badly and cause the place to rupture.

Everything was a gamble at this point, and things weren't looking too good for them. Aria gritted her teeth as she began to rack her brain to come up with a solution for this.

First of all, fighting. How would they fight? Or was there another way to end this dungeon without fighting, like the one they performed over at Leonis' dungeon? Second, what type of attacks would work?