“Hello Van, so glad you could finally make it.” Marie said with a seductive look his way. She was sitting on his bed with Luna, she hadn’t once changed back into her clothes. Instead she had changed into a pair of very revealing lingerie. She wasn’t the only one either, Luna had somehow also gotten ahold of some very sexy attire, probably given to her by Marie, and was sitting on the bed beside her.

Despite Van’s exhaustion, he couldn’t help but feel his little dragon stir and awaken upon gazing at his beloved wife. “Well… A quickie doesn’t sound that bad…”

---Sex Scene---

Van gave a light groan of enjoyment as Luna worked his shaft. Taking it in her mouth and making it disappear like magic into her throat.

“Not bad.” Marie commented beside him. “It’s clear you two are used to this.” She said approvingly. “Now try doing what I said. Let’s see how good you really are.”

Van closed his eyes and began to concentrate. He felt Luna’s smooth lips ride up and down his cock. Her hot tongue swirl around his shaft, and her warm throat accept him. He focused and began to pull his mana downward into his dick, changing it, cleansing it of his essence and then…

He gushed a huge load of mana down Luna’s mouth alongside his seed. The reaction was almost immediate. Luna moaned like she never had before, her body spasming as if already reaching climax. He felt himself being drained as she tried to swallow more than just his monstrous amounts of cum.

“Very good!” Marie exclaimed happily. “You're a natural at this! Look at her, she’s completely taken in by the joy of your dick. And more importantly you can literally feel the mana inside her growing.” She turned to him. “Now it’s your turn. Feel her excited and rampaging aura. Drain it into yourself. Feed upon it.”

Van gasped but did as he was bid. Slowly he began to reach out mentally to Luna’s energy and grab hold of it. Carefully he began to coax it towards him, and then once he got used to it, began to pull on it more fiercely.

Marie nodded. “That’s it, be gentle now, you don’t want to go too hard.”

Van felt some of his energy reserves begin to restore. His body began to feed off of Luna’s energy and turn it back into usable energy for himself. It felt odd and a little weird, but it was doable.

“Very good.” Marie then turned to Luna. “Alright dear, now it’s your turn. Try doing what we practiced.”

Luna gulped the last of Van’s seed and tried to get her head back into the game. Slowly shadowy horns began to form on her head, alongside a shadowy pair of wings and a tail.

Van was taken aback, he had only seen such a form a few times only, and usually when Luna was very mad. “Is Marie teaching Luna how to control her succubus half. If so, this could really be beneficial to her…”

Next thing he knew, Van was put on his back by Marie as she ordered Luna to ride him for all he was worth. Luna obliged happily and a new lesson was being taught, though this one was not for Van. Luna began doing her best to try and drain Van, all the while keeping her new form constant. It was difficult as her new features would flicker in and out, but she did her best anyway.

“Very good Luna, now try doing that other thing we practiced.” Marie asked.

Luna moaned as she rode Vans shaft hard and fast. But closed her eyes and began to concentrate. Slowly her form began to shrink down to that of an imp, only to expand rapidly back to the size of a halfling. She gasped as Van’s cock inside her grew to expand her entire body, making her lose concentration and forcing her back to normal size once more.

“I know right?” Marie said with a smirk at Luna’s expression. “No wonder imps and the like enjoy sex so much despite being so small. Now let me take over and show you how it's done.”

Marie switched with Luna and inserted Van’s cock into her. Van gave a surprised gasp as her insides began to coil around him.

Marie gave a wink. “Centuries of experience my friend.” Then began to shrink down to that of the size of an imp.

Van couldn't stop himself and grabbed hold of her new tiny body.

“Eh?” Marie looked surprised by the fact that Van could still move. Most at this point would be in too much ecstasy to stop her from having her fun. The next thing she knew, she was being used as a sex toy, Van’s strong hands keeping her in place as he pounded his big and girthy dick into her new smaller body. Her eyes began to dilate and roll backwards as her pussy began to choke on his dick until her stomach expanded with a never ending torrent of his seed.

“N-not bad…” She gasped. “But what about rounds two through ten?” Feeling like her pride was at stake at this moment.

She should have kept her mouth shut…

---End of Sex Scene---

Van woke up with a groan. Tired as he was from last night's antics. He felt refreshed more than he ever had in a while. He looked down on the cute faces of Marie and Luna who were quietly sleeping on top of him. Wondering if he should wake them up.

Deciding not to, he slipped out from under them as carefully as he could, last night's antics making sure that they were well and truly knocked out. Quickly changing he made his way to the door when he heard a knock come from it and froze. He was beginning to wonder if everyone was going to one day end up knocking on his door in the morning…

Slowly he opened the door to check who it was. And to his not surprise, someone new was there waiting for him.

“Hello-” She quickly looked down at the clipboard she was carrying. “Van…” Looking back up at him. “I’m here to take you to the Central Shield Center. Where you will be putting your mana to good use in protecting our city from monster attacks and the occasional fog storm. Please be reminded you do not have a say in this. I’ll wait five minutes for you to pack anything you wish to bring as you will be gone for the whole day. And yes, the officer in charge of you has been notified that you will be out today. I’ll be waiting out here, please do not take too long.

Van paused before sighing, he asked the girl to give him a minute and closed the door, wondering about what she meant by packing his things. “Perhaps since it’s going to take the whole day I should pack some food? Or something to read?” He couldn’t be sure, but since everything he could ever want was in his soul realm, he decided that he might as well leave now. But not before leaving a note for Luna to read, telling her where he went.

With that he opened the door and followed the girl to his next destination.

To his surprise they didn’t go anywhere that was placed on or near the wall. Instead they took a train to the very heart of the city, where a large cylindrical building was with a massive dome. Physically speaking there was nothing of note other than how impressive and big it was, but activating his mana eyes he saw that great torrents of energy shooting out from the dome and into the air. There also seemed to be many tubes that shot out from underground connecting themselves to every corner of the city, with a large majority of them stretching out to the several layers of wall that protected the city.

Entering the building, he was taken aback by its extravagance, as well as the security on display. They had to go through at least four security points just to get anywhere near the center of the superstructure that spiraled deep underground.

They finally arrived in a massive chamber at the bottom of the building where the biggest mana crystal he had ever seen in his life rested, surrounded by scores of mages, engineers, artificers and more, all going about like so many busy ants.

Van couldn’t help but be amazed at what he saw. The mana crystal seemed to feed into several tubes surrounding it. And there also seemed to be ginormous batteries that both helped regulate magical flow as well as store any excess mana for future use in case of an emergency.

His guide led him to one of the many batteries that connected to the mana crystal. A giant cylindrical tube-like structure where pure mana was converted and condensed into a form of liquid and stored.

“This is where you will be working for the rest of the day.” His guide explained. “All you have to do is put your hands on the orb there and pour in your mana. There really isn’t much else to it. When you're tired, there is a cafeteria down that hall and a meditation room across from it. The amount you put in is the amount you will get paid for.”

“I’m getting paid?” Van perked up at that.

“Unless you're a convict or something, all those who work here get paid for the mana that helps this city continue functioning. Though you will be getting half the usual amount as punishment. Or that's what it says here.” His guide said.

“Good luck and try not to overwork yourself. The last thing we need is to carry your unconscious body to the clinic.” and with that she left, leaving Van all alone.

Van turned to the orb in front of him and stared at it for a good long while before finally placing his hand on it. “Welp… I guess there's no time like the present…” He then began pouring his mana into the orb and his eyes widened. The orb was sucking his mana out like a vacuum in almost a painful way. His arm was going all tingly and he felt his reserves of energy drain at a rapid pace.

“This is crazy! How much is this thing going to drain me!” He panicked a little thinking it might drain him dry. And in his panic began trying to throw all the mana he had available in the hopes of satiating the hungry orb. The tube in front of him began to glow as it absorbed Van’s mana.

Remembering what little Marie had taught him, he began to try and convert some of his vitality and stamina into mana to pour into the orb as well. Determined to feed the hungry beast so that it would stop sucking on him.

But it was to no avail. Only after two hours and Van’s body feeling like it had been completely drained of power did the orb finally let him go. He almost collapsed on the floor, but was able to pull on some of his energy reserves within his mana realm to keep in steady. Walking his way to the cafeteria, he decided to get a nice hot meal before heading into the meditation room.

A few hours later, he went back to the orb to try his luck again and see if he couldn’t feed the battery full. But by the end of the day he left even more tired than when he started, wishing that perhaps he didn’t try so hard.

Lethargically he walked back home, completely out of it and unable to continue any of Marie’s nighttime lessons.

---

“Hey, are you seeing this?” One of the technicians said to his fellow workers. She tapped on a screen. “Battery twelve went up by a whole three percent. Does anyone know if we gave it an influx of mana stones or something?”

Her colleague leaned over to check out what her friend was pointing at. “Huh… That’s weird. The only thing different was that we got a newbie in just today for number twelve. But there's no way he alone was enough to recharge it that much…”

“Should we report it in any way?” the technician asked.

Her friend thought about it before nodding. “Best we do so just in case there's an error. The last thing we need is a faulty reading giving us the wrong percentage of the battery. Imagine what would happen if in an emergency we thought we still had three percent power left but it completely shut down on us.”

“Yeah, you're right, I’ll call it in.”