Alexis started singing again. But her song wasn't addressed to you, she was luring luring Laura. Laura wouldn't predict that mermaid magic would affect another mermaid, but she definitely got under Alexis influence. She was scared of what her cousin would be about to do, especially since Laura was newly born mermaid. The song got stucked in her head, and then she heard an order from mermaid princess. "Don't resist"- she was helplessly submerged from the waist to the end of her koi tail and was completely under Alexis control. Then Alexis leaned to her. Laura at the same time got kissed by golden mermaid and heard another order inside her head "embrace your mermaid nature with me" as Alexis put her tongue inside Lauras mouth, started caressing her mermaid breasts with one hand, and rubbing her tail with another.
Laura couldn't resist as she felt her body following Alexis orders or just maybe her awakened mermaid instincts. Still receiving luring song in her head, she caught Alexis mermaid hips and pressed them against her hips. She could feel her mermaid vagina being out there as she started rubbing her orange tail against the golden one. Despite being under control, she was receiving all of the sensations. Feeling her tail being caressed, massaged and stroked was such an arousing feeling- no human legs massaging, kissing or licking would match what she was feeling right now. Alexis stopped kissing Laura's lips and moved to kissing and licking her neck. "Accidental" bite was like spark of joy for Laura, as golden mermaid was slowly going down to her collarbones, making circles with her tongue on Laura's breasts, finally reaching her erect nipples and sucking them which gave Laura another wave of extreme pleasure. Then Alexis moved down to her belly button, passed transition between her human skin and fish scales and inserted her tongue into the final destination...
"OHHHH, RIGHT THERE, THEREE"- Laura would scream if she wasn't under influence as she felt warm, long and flexible tongue exploring her mermaid vagina. She forgot where she was or what was her goal in the first place as she was descending deeper and deeper into the kingdom of sexual satisfaction. "Is this what I was running from all of these years?"- she thought to herself as she was witnessing her body obeying Alexis orders.
When Laura's orgasm faded, Alexis emerged again licking her lips. Yes, she forced her cousin to submit to her orders, but this was part of her plan. "It's time for second part of the plan"- thought Alexis as she stopped transmitting her singing to Laura's mind and left her head making her free again. She was curious about Laura's further actions.
Laura still feeling her mermaid orgasm echoing in her body looked at her face, like she was thinking what to do now. Without saying a single word she dived in front of her cousin and put her tongue in scaly, golden vagina like she wanted to repay her the pleasure she already received. Still being in a frenzy, and now guided only by her mermaid instincts she drilled her tongue into Alexis pussy, like she wanted to transmit all of the arousal, excitement and pleasure that she got. Thanks to her gills, she could breathe and work at the same time, so she did't have to taking a break to get some oxygen. Alexis smiled to herself, "my plan is working perfectly" she thought as she was penetrated by Laura's tongue. She pressed her head to her vagina and started caressing her head like proud parent.
Laura despite being the one who was giving pleasure to another person, felt like she was pleasuring herself at the same time. While kissing and sucking Alexis clitoris she noticed that she can't hear the luring music in her head anymore. For the las few minutes she wasn't under influence, but she behave like she still was. She removed her hand from the slit and started analyzing current situation. Did she start making love to Alexis out of free will, or was she framed into this scheme? Stopped pleasure was another signal for Alexis. Now that was the moment for next part of her plan.
Soon after, Laura emerged in front of Alexis. She was shaking out of anger as she discovered she was scammed. "WHY DID YOU MAKE ME DO THIS?" yelled Laura "YOU MANIPULATED ME TO DO ALL OF THIS STUFF TO YOU, I DIDN'T WANT TO DO IT, I DIDN'T WAN..." she stopped as she noticed that something inside her didn't let her be angry with Alexis anymore as she started again looking helpless at her. "My dear cousin" golden tail mermaid started, "I just wanted you to help you embrace you mermaid nature that you've been trying to cover for all over the years, your true nature. But luckily, you got initiated and became a real mermaid. Maybe my mind control was a breach of rules, but your decision to please me was your own choice" said Alexis as she swam closer to Laura, hugged her and placed her head on her soft breast.
"Now, when you finally became real yourself, it's time to decide, what we should do with this young man" said Alexis as she pointed her finger at you lying naked on the ground.