Going back in time a little just before Alex and his group entered the sixth floor.
Maria, Luna, Gracier, and Sakuya were already killing monsters on the fourth floor of the dungeon they have been assigned to.
The girls were fighting against a group of goblins; unlike normal goblins who have green skins, the goblins the girls were fighting had black color.
Sakuya moved between three goblins, and immediately they were sliced into two, blood spurt into the air; however, none of those blood landed on Sakuya as she had already vanished from there.
Marla's Ice arrows pierced through the head of five black goblins, Gracier armed with a scythe, sliced two black goblins apart.
Luna stood farther away from the ground, not doing anything.
It didn't take many minutes for the three girls to wipe out the fifteen remaining black goblins.
They decided to take a short break.