After coming inside the dungeon, Natalia decided to take the lead. Well, Saint John and the others did not have any problem with that as she is the strongest among them.
If something unexpected happens she would be able to protect them. If it wasn't for the limit of the planet she would have become more powerful.
So, despite the age difference Saint John, Markus, Veena, and Tony did not have any problem with Natalia.
As expected the moment they appeared on the first floor, they were attacked by those S-grade monsters. All of those monsters are intermediate S-grade monsters.
All the Monsters who can use the long-distance attack, have already attacked them. The remaining Monsters are waiting for the perfect moment to attack them in close combat.
Fortunately, Natalia and all of them are prepared for this kind of surprise attack. Every one of those attacks that hit the barrier appeared in front of them.