Demon Lord Shapeshifting System

It didn't take long before all the clothes were strewn on the bedroom floor.

"You have to try putting your tongue inside the slit. Guys go crazy for that too." Joan said.

Mina's eyes widened. "Really? I haven't seen that yet when I did my research."

They were both lying on the bed on their stomach, while Harker was sitting up with his legs apart. Mina was holding the base of his hard shaft, while Joan's breath tickled the sensitive leaking tip.

"Here, you try it." She edged a little bit to allow Mina some space to suck the bright red glans.

Mina gingerly placed her tongue on the hole where the pre-cum was leaking out. Harker muffled a moan, proving that Joan's advice was right, and she became more enthusiastic into licking that part and teasing the small hole.

"Mm…. I should ask you for some pointers. You have a lot of experience."

Joan chuckled. "Oh honey, I have enough experience for 3 lifetimes. Of course I'd be glad to give you some pointers. But observation is the best teacher, so you should watch me carefully, okay?"

She went to put on a show of expertly blowing Harker's cock. This was something else. Harker had never experienced a blowjob from someone else besides Mina before, and she was a virgin too so she wasn't that skilled. He still liked the sloppiness of it, but Joan's technique was just so good that it took all his will not to bust right then and there.

With a pop, Joan let go of the hard cock, and handed it to Mina. "Now you try. You don't need to copy the exact methods, just the general feel. Start slow and shallow, then deep, then swallow."

Mina went on to do her best, and she was a pretty fast learner too like Harker. The slurping sounds went straight to his crotch and made him even hornier.

It seemed to be doing its effect on Joan too, as he saw her move her hands down between her legs. She moaned right on his dick while fingering herself as she watched Mina bob her head up and down and take in all of Harker's length.

"That's right…. You're doing great, love. Keep at it…. Ahh…."

Joan gave a seductive glance at Harker, as if she knew that he was at his limit. Having her watch him like this reminded him of that night he also watched her pleasure herself, and she was aware of it all along.

Harker felt a tug on his gut because of these thoughts, and cummed on Mina's mouth.

Mina felt a hot surge of liquid going into her throat. She didn't know what she was supposed to do, or how she was supposed to swallow it, but she tried her best. Some went down her throat, and some came out.

She saw Joan licking up the mess that she had made, and she had to admit that it was pretty hot. Harker panted heavily while his eyes were closed in bliss. Mina felt proud that she was able to make him cum that hard.

"You did great!" Joan wiped off her mouth and gave Mina an encouraging smile. "You're really good."

The blonde girl blushed. "Thank you."

"But I think Harker needs a bit of a rest, he's still a bit exhausted. How about we give him a massage for now?"

Harker was still out of it when Joan went over to him, and placed his head on her lap. Her breasts were dangling over his face, and he was still panting after that explosive load he just released.

"Poor dear…." Joan placed her hands over his shoulders, and started kneading on those muscles. "Your hard-on wasn't the only one that's stiff. Your whole body must be exhausted. But don't worry, we'll take care of you."

Mina grinned, and started rubbing his abdominal muscles as well. "That's right. Leave everything to us."

Harker creased his eyebrow as he smiled. "But I don't want to just be serviced. I want to make you girls feel good too."

"You're already making us feel good just from being an eye candy, love." Joan chuckled, and took Harker's hands.

She licked every single finger deliberately slow. She valued the importance of foreplay, and it showed. She then pressed those wet fingers over her nipples and moaned at the coldness of Harker's touch. It didn't take long before her nips popped out and got hard.

Mina also used Harker's lower body to pleasure herself. She took the Harker's dick into her hands which was still soft from ejaculation, and rubbed it all over her breast. The stimulation from both sides sent Harker reeling. It was almost as difficult as controlling many clones of him at once.

"I have a question, blondie. I hope you don't mind." Joan said as she lowered her breast for Harker to suck.

"What is it?" She asked.

"Have you tried to take it from the back? I promise it's a different experience than taking it from your pussy." Joan had a mischievous look on her eyes.

Mina gulped. "I didn't know I could take it there either. The ones I watched…. Well, I wasn't really paying attention where they put it because I was used to having just one hole for this laying eggs and not actual penetration, and the other hole is just for waste. It took me a while to get used to having three holes being able to be stimulated."

"Oh, that's right. You had a fish anatomy as a mermaid." Joan's eyes brightened. "Stimulating all three holes is really fantastic. You can rub your clit and finger yourself while taking a hot dick on your ass…. Let me demonstrate."

They exchange places, and she winked at Harker. "You should prepare her, she's a backdoor virgin after all. With your length, it's gotta be rough for a newbie."

Harker reddened at the thought, but didn't really feel anything against it. He beckoned Mina. "Come here….. You should sit on my face while our dear professor 'demonstrates'."

Mina wasn't expecting that Harker would go for her ass this time, licking and sucking the entrance. She moaned, clinging into the bedpost so she wouldn't accidentally crush Harker's face while sitting on it.

Joan grinned, and took on a riding position. She encouraged Mina to look.

"Watch closely. You're now my student, and I'll teach you all about pleasuring men. And I want you to enjoy yourself too as you watch." She placed her fingers on her dripping wet cunt as she placed the tip on her ass.

Mina nodded, and did the same while Harker rimmed her.

Class was now in session.