Through the drunken haze of being filled by their mate’s life nectar, Tsunis heard Casimir’s words and knew bore weight to humans. Casimir’s shoulders shook, his hips jerking throughthe aftershocks of an intense orgasm. An orgasm Tsunis had curated. An orgasm Tsunis had greedily swallowed into their own body.
They chuckled and kissed the top of Casimir’s head in the loving fashion he often did to them, but rarely were they tall enough to reach their masste’s crown.
“You don’t have to say it back. I know it’s only been—”
“Don’t be ridiculous,” Tsunis chided. Letting their legs fall from Casimir’s waist, they drifted down, using their fins to stay eye-level. “I marked you within a week of meeting. You still don’t understand the levity of my mark. To say this word of yours,love, it is not enough.”
A rare blush darkened Casimir’s cheeks, and he tried to stifle the moment with a kiss. Tsunis grasped his throat and held him back.
“It’s time you understood. I want you to know exactly what you mean to me. It was reckless of me to bite you so soon without you knowing the depth of my actions.” A frown twisted their lips, but they pushed forward. “Like humans with oxygen, I would not survive without water. My existence has been one of war and chaos. To find a mate and share a spirit song was an unattainable moondream. A fantasy of someone else’s life. Never my own.”
Casimir’s hands smoothed up and down their arms, and only then did they realize how intense they’d become. Tsunis took a deep breath and attempted to smile, taking Casimir’s cheeks in their palms.
“You are my water. My oxygen. You are woven into my spirit song. You are my peace, my reverie. You fulfill all the moondreams I never dared to claim. You are my mate. Of course, I love you.”
Tsunis licked away the salty droplets of water that leaked from Casimir’s golden eyes then kissed him deeply, hopingthey’d said enough. If Casimir was upset about having their mate mark thrust upon him, he didn’t show it.
“Enough.” Tsunis whipped Casimir around, smirking at his surprise when his back hit the rock wall and Tsunis pinned his wrists. Their silly mate often forgot that Tsunis was a decorated warrior and could easily overpower him should they choose to. “I promised you more.”
Casimir’s shock gave way to anticipation. He tried to reach for them, but Tsunis held firm.
“Not here.” Tsunis leaned close, watching their mate’s reaction to every dirty word they uttered. “I’m going to have my way with you, mate, the way I’ve pictured every day since you offered me your blood.”
“Oh? And how’s that?”
“We’re going to the brook, where I will toss you over that damned rock and mount you properly.”
“Oh, fuck.”
“Yes, Nymphaiia. I’m going to fuck you so full, your pouch will show itself.” Tsunis’ inhuman jaw loosened, their mouth filling with saliva. “I’m not on my cycle, so we won’t know if you can take my clutch yet. We’ll work up to that.” Tsunis fixed both of Casimir’s wrists into one hand, the other drifting below the water to graze Casimir’s abdominal muscles, rubbing a thumb over the lowest part of his belly. “Regardless. Today, I’ll fill you with so much slick, we’ll see a preview of how you’ll look rounded with my clutch.”
“Tsunis.” Something about his tone made Tsunis drag their reverent gaze from his stomach to his face, where they found both lust and apprehension. “You do know that I’m, you know. I mean, as hot as that sounds, babe, I don’t know if that will work.”
Tsunis smiled wickedly. “It will be fun to pretend.”
With one last kiss, Tsunis dragged Casimir under, allowing the river’s stream to sweep them up. The river’s flow was working on their side today, their magic more powerful than ever. It took only three ticks of moonlight before they surfaced at their destination.
Tsunis soared out of the water and slung their mate over one shoulder. Strong hands grasped both their butt cheeks and squeezed. Tsunis growled and smacked the finely-sculpted behind, tempting them from their shoulder, eliciting a deep groan.
“And you call me the brat,” Tsunis grumbled.
Casimir giggled and joyously continued toying with Tsunis as they walked. A sudden glob of saliva dripped between their cheeks, causing them to clench. Casimir encouraged the wetness down, circling their hole with a spit-coated thumb.
Tsunis webbed their hands and feet, crawling to the top of the boulder before the digit could breach them. They tossed the human onto the mossy stone and leered above him on all fours.
“Please,” Casimir whined.
Pink-cheeked and begging for Tsunis to fill him, Casimir was breathtaking. This was a side of him they’d yet to see, and they knew the only way to get their playful, confident mate back in his usual state of mind was to fuck him fuller than he’d ever been. The image brought a maniacal grin to their face, their jaw splitting to accommodate two extra rows of teeth and a long, wide tongue.
“Fuck, you’re beautiful. Oh, fuck.” Casimir’s legs clenched together, softened cock twitching.
What a monster they must look to their human mate, arms and legs bent outward at inhuman angles, webbed hands and feet gripping the stone, mouth full of teeth splitting their face, and tentacles engorged with slick dripping over Casimir’sthighs. Yet, instead of fearing for his life, he called them beautiful.
“Mine.” Tsunis let their long tongue lull from their mouth, beyond pleased when Casimir’s eyes widened then fluttered with lust. “Say it.”
“Yours.”
Oh, goddess. All his typical bravado had melted away. They could get addicted to this sight.
