Her pace quickened, her movements becoming more urgent as she rode him with wild abandon. Her moans filled the cabin, and Nereus could feel her walls tightening around him, signaling her impending climax.

"Nereus," she gasped, her body trembling. "I'm so close."

"Come again for me, Isolde," he commanded, his voice firm yet tender.

She soon cried out, her body arching as her orgasm crashed over her. Her walls clenched around him, and he let out a loud groan, his own release building rapidly. But he held on, needing to claim her fully before he let go.

"Isolde," he breathed. "Can I do the mating ritual now? Can I claim you fully as mine?"

Her eyes met his, filled with love and desire. "Yes," she breathed, her voice filled with excitement. "Claim me, Nereus. Make me yours."

He growled, his wolf surging to the surface as he flipped her onto her back, never breaking their connection.

He thrust into her with deep, powerful strokes, their bodies moving in perfect harmony.

Her nails raked down his back, and he could feel her walls tightening around him again as she neared another climax.

"Nereus," she moaned, her body trembling beneath him.

"Come, my Luna," he growled, his thrusts becoming more frantic.

She screamed out as her orgasm hit, her body convulsing around him. He felt his own release teetering, and with one final thrust, he buried himself deep inside her, his large member pulsing as he came.

As his climax washed over him, he leaned down, his teeth grazing the sensitive spot where her neck met her shoulder. "You're mine forever, Isolde," he growled, his voice filled with primal possessiveness.

He bit down, his teeth piercing her skin, and she gasped, her body arching against his. He licked the wound, sealing the mate bond, and felt the connection between them solidify, unbreakable and eternal.

"Nereus," she breathed, her voice filled with awe. "I feel it. The true mate bond."

He kissed her gently. "You're officially my Luna, Isolde. My everything."

She smiled, her sea-blue eyes filled with a deep love. "And you're my alpha. My everything."

He held her close, feeling her heart thunder against his chest as their breathing gradually steadied. The satisfaction of finally claiming his mate coursed through his veins like liquid fire. Three hundred years of patiently waiting, and now she was truly his—marked and bonded for eternity.

"Mine," he growled softly against her ear, his thumb tracing the fresh mating mark at the juncture of her neck and shoulder.

But suddenly, Isolde's body stiffened beneath him. Her fingers dug into his biceps with surprising strength, her back arching off the bed.

"Nereus," she gasped, her voice tight with alarm. "Something's happening?—"

He pulled back slightly, his keen eyes assessing her. The sea-blue of her irises began to glow with an eerie turquoise light, brightening until they resembled the luminescent depths of the ocean floor where sunlight barely penetrated.

"Stay calm," he commanded, though his own heart raced with excitement and disbelief. It couldn't be possible... could it?

Her skin shimmered beneath his hands like sunlight dancing across water.

Isolde let out a cry—not of pain but of surprise—as her body began to shift and transform.

Where his beautiful, curvy mate had lain moments before, a stunning white wolf now appeared, with distinctive patches of blue-gray fur swirling across her coat like ocean waves.

"By the Moon Goddess," Nereus whispered, unable to contain his awe.

The white wolf—Isolde—blinked up at him with panicked turquoise eyes, her body trembling beneath his hands.

He immediately slipped from the bed and called upon his own shift, the transformation happening in seconds through centuries of practice. His massive form landed gracefully on the yacht's cabin floor, his turquoise eyes locked on his mate's.

Easy, my Luna, he sent through their newly formed telepathic bond. Don't fight it. You're truly magnificent.

Her thoughts tumbled back to him in chaotic bursts. How is this possible? I'm human! I shouldn't be able to ? —

Then he felt the shift in her consciousness as realization dawned. Images of her friend Lorelei flickered through their connection—another woman who had transformed after meeting her mate.

Lorelei... she changed too. After she met her alpha and turned thirty... Isolde's thoughts crystallized with sudden clarity. I'm not human. I never was.

Nereus padded closer, circling her wolf form with undisguised pride. You're a waterwolf shifter, just like me. Your powers were dormant until your thirtieth birthday, waiting for you to find your true mate. For us to complete the mate bond.

He nuzzled her neck, inhaling her scent—now enhanced with notes of wolf and ocean magic that made his blood sing. Do you understand what this means, my Luna?

Isolde's wolf form cautiously stretched, testing her new body. I'll live as long as you, she realized, her mental voice filled with wonder. Centuries...

Yes. His satisfaction rumbled through their bond. Now let's go home. I want to show my Luna what she can truly do.

He led her to the deck of the yacht, and without hesitation, leaped into the moonlit water below. Isolde followed with only a moment's pause, her instincts guiding her. The moment her wolf form hit the water, Nereus felt her exhilaration blast through their bond.

This is incredible! Her thoughts sparkled with joy as she found her rhythm, swimming beside him with natural grace. I can feel every current and every creature around us!

This is your birthright, he told her, pride swelling in him as he watched her sleek form cutting through the waves. The ocean has always been calling to you. Now you understand why.

They swam side by side through the dark waters, moonlight guiding their way toward the shore of his territory. Their territory—not just his anymore.

When we return, Nereus projected, our pack will see their true Luna in all her glory. No one will question your place at my side again.

And Marina? Her thoughts turned to their vanquished enemy.

She never understood what you truly were, he replied. None of our enemies will. That's our advantage.

As they approached the shoreline of their kingdom, Nereus felt a completeness he'd never known. His Luna was his equal in every way—powerful, beautiful, and immortal. Together, they would rule the Seafang pack for centuries to come.