Once Grayfia, who was deliberately shaking her waist was out of his sight Natsu didn't even have the time to regret that he couldn't see her any longer, before Rias finally spoke up.
"She has already left, darling."
"I know...!"
Looking up in shock due to his slip of tongue, Natsu saw Rias's eyes which looked like it would start crying at any moment.
"You've changed a lot darling!"
"Yes, Master had changed a lot!"
While Carla also spoke up in agreement, Erza only nodded her head to show that she agreed with the rest.
"You guys.... I just remembered something I have to do."
With those words, Natsu chose to disappear and reappeared inside the Great Las Vegas Dungeon.
"Master has turned very sly!"
"Humph!"
...
The reason Natsu chose to teleport himself to the Great Las Vegas Dungeon wasn't just because he wanted to escape the three jealous women, but since he got an erection after what happened with Grayfia.
And, now that Natsu was no longer a virgin, and had a special relationship with Amanda, he would naturally go to her to satisfy all of his desires.
Interrupting Yoruichi who seemed to be enjoying her conversation, Natsu told her to guard the Dungeon, while he directly pounced on Amanda who had finished dressing herself not too long back.
"Mmmm..."
Stunned for a while, Amanda didn't do anything to stop Natsu and went along with him.
Because, after their afternoon sex session, Amanda still found herself craving for more.
"I didn't expect to see you so soon, Natsu."
"Well, what can I say. I found myself dreaming of you."
As Natsu resumed kissing Amanda, and used his hands to remove her clothes, he didn't forget all the words of advice he was given by her on kissing.
Stopping the kiss, when Natsu had completely undressed her, Amanda said, "Nice hands, they were quick and smooth. Also, good job on the kissing. But, you lied about the reason you came here for."
"What?"
"Oh please, I know it when a man wants to have sex with me. And when a man wants to use me to get rid of his lust. You've obviously been turned on by another woman, and came here to release that lust on me."
Having been found out, Natsu no longer made abys tries and excuses.
Instead, he directly said, "Yeah, so?"
Raising her eyebrow in surprise, Amanda said, "Nothing."
"Good. Now come here."
Pinning Amanda to the bed with his arms, Natsu continued kissing her after which it didn't take long for her moans to resound through the hollow Dungeon.
...
Looking towards the deeper end of the cave from near the entrance, Yoruichi who picked up the sounds with her sensitive ears grinned and said, "She seems to be enjoying herself. When does my turn come?"
...
Unlike his first time, Natsu lasted a much longer his second time and managed to make the pent up Amanda orgasm as well, just before he cummed inside her.
Due to this, Natsu completely forgot about what happened during the first time and regained his confidence.
Luckily, this time his confidence didn't reach the stages of overconfidence.
After the first day, Natsu told Amanda about his decision to turn her into a Proxy Dungeon Master, and continued visiting her twice, and sometimes thrice every day for the next two weeks while both of his Dungeons went through a steady period of growth.
...
"Can't you spend the night here, Natsu?"
Having gotten used to the sex which after starting off as average, had very rapidly reached the stages of mind blowing, Amanda who could never leave the Dungeon felt her emotions towards Natsu change.
They were no longer the kind which a subordinate had towards her employer. Or in this case, the kind which the slutty assistant, had towards the CEO.
Instead, her emotions were dangerously running close to love.
Due to this, she couldn't help but find herself asking the same question every night after Natsu and she would have their final round of sex for the day.
"Why ask the same question every day, Amanda?"
'Because I'm starting to love you!'
Not that anyone could blame her, because after being forced to stay inside a Dungeon all day, even though that was what she wanted, it was bound for Ananda who was having sex every day to start having feelings for Natsu.
But, she still didn't dare say the words out loud and kept them to herself.
Because if Natsu accepts, everything would be alright. But if he didn't, that was when things would turn complicated.
Thus, even though Amanda didn't want to, she decided that her life was complicated enough for now, and that she would patiently wait for the right time.
Maybe until she performs something very good, and causes Natsu to feel very happy.
"Because I feel lonely during the nights."
Rolling his eyes, Natsu who was completely oblivious to Amanda's feelings, and thought that she was having sex with him due to their arrangement, said, "You and Yoruichi hug each other like koalas to sleep."
"I.…"
Deciding to not say any more since it would do neither of them anything good, Amanda turned around and pouted when the two of them received the same notification.
[##### has invited you to join the Dungeon Masters of Earth Group.]