"HNNNNGH!"
Medea released a loud, drawn-out throaty groan as Castor's cock got fully sheathed inside her cunt at once. Castor's thrust was fast and hard. At the very least, her cunt was already wet. If not, it would feel painful than blissful.
Standing next to the bed, Castor watched Medea arching her gorgeous body upward, her breasts swaying and rippling from the sudden movement. Her eyes opened wide, her teeth gritted, and her jaws clenched. Her hands were gripping the bedcover tightly, to the point of ripping the fragile fabric.
Soon, Medea collapsed on the bed, bouncing slightly due to the bed's springiness. Then, she glared mutinously at Castor.
"That… you… could you not do that, you brute?!" She ground out, pissed. Tears of resentment pooled at the corner of her eyes but not fell down, making her look cuter.
Castor ignored Medea's complaint. He was concentrating on one of his favorite vices. He gripped Medea's waist and then moved his hips back.
"Yo-You—Mmmh~" Medea moaned as Castor's endowed dick rubbed her sensitive spot. "Never mind. Do what you want…haaah~"
Then, Castor thrust his hip forward, sheathing his cock inside Medea's tight, hot, and slippery cunt.
Soon, Castor's grunting, Medea's moans, the sound of slapping, and the lewd wet sound of their lovemaking filled the room. Castor has his body lean forward and had his hands circling around Medea's waist. Then, he claimed Medea's inviting breasts, suckling her nipple strongly. Medea immediately gripped Castor's hair with one hand while her other hand was scratching his back. Her thighs pinned his tight, her legs locked behind him.
"Ah! Yes! Harder, dear~ fuck me harder! Faster! Oh~ dear gods~ ummmh~ fuuuh~ hmmm~ ohhh~" Medea gasped and moaned wantonly as her sweet spots were hit by Castor's thick, hot, pulsating cock. Him biting and sucking her n1pples increased the pleasure she was indulging in.
Castor fucked Medea roughly for a while. When Medea cum for the first time, he didn't stop despite Medea's pussy was contracting so much. He kept fucking her despite her orgasm and sensitive state. He had stopped toying her nipples and was trailing kisses on her sweaty, rosy skin, moving up from her cleavage, to her chest, then her neck, after which the underside of her jaw, then her lips, then her cheeks, and finally to her ears.
"Fuu~ ha~ haa~ fuu~ haah~"
Medea didn't even have a chance to moan, only gasping and releasing a ragged breath. Her lips parted, drool drenching her jaw. Her eyelids half-lowered, giving her a sultry, half-lidded look. Her rosy face was covered by fragrant sweat. Her mind was blank because of prolonged bliss and pleasure. At this point, she had forgotten their bet, trying to return from the never-ending waves of pleasure to no avail. She was at Castor's mercy due to onslaught of pleasure that messed with her self-control.
Suddenly, Castor released her ear from his teasing and sped up his hip movement. He thrust himself in and out of Medea's cunt frantically. And within moments, he sheathed his cock deep inside Medea's pulsating cunt, its tip kissing her womb's entrance, spilling his hot, rich spunk inside her core. Moreover, Castor's ejaculation triggered Medea's climax.
Medea's body arched up, her lips parting in a soundless scream. Her eyes rolled back into her skull, her hands gripping the torn fabric of the bedcover. Her body twitched and trembled.
A while later, Medea dropped her back on the bed. She gazed at the ceiling with glossy eyes, her expression vacant and breath ragged. She remained unresponsive as she enjoyed her orgasmic afterglow.
Suddenly, Castor drew his face close to her ear and whispered "What's this? Does the experience seductress hit her limit? Do this mean you yield?"
Castor's taunt woke Medea up. Her eyes quickly regained their clarity and fixed at Castor's smug, punch-able face.
"Hump!" She harrumphed and averted her eyes to the side, "Who said I am at my limit? Go on. I could take more!"
Castor laughed raucously after he listed to Medea's cute attempt to present strong and haughty front. He was aware that Medea was a prideful woman, but her attempt was hilarious and cute.
Feeling wronged, Medea glared at Castor, who stopped his laughter and shook his head in amusement and a bit of exasperation.
"Okay! Okay! The night is still young. Let's see who will lose our little game," said Castor while grinning cockily at Medea.
"Bring it on!"
And so, Castor and Medea continued to indulge in carnal pleasure while the other Masters and Servants in the Fourth Holy Grail War were busy scheming against each other. Medea would later discover that Castor's peerless stamina was indeed real and not an empty boast. She would unwillingly agree to let Castor pursue his fantasy because it would help her later. But, it was a topic for another time.
***
The next day, when the sun was up in the sky, the time was 10:27 AM at Japan's Time Zone. There lied Castor and Medea. The later was sleeping deeply, resting her head on Castor's bicep. Castor was watching Medea's peaceful sleeping face while rubbing her smooth and soft thigh. Sometimes, he would squeeze her luscious butt cheeks. He was mesmerized by her beauty and sexy body.
They had gone all out until a couple of hours ago, and Castor had won their bet. Medea had lost consciousness first around 8 AM. Although Castor could continue, he decided to take a break after ten hours of Marathon sex. He didn't want to get bored with her after meeting her last night. He'd promised not to betray her, and he didn't want to incur her wrath and scorn.
Recovering from his daze, Castor decided to spend his free time productively and created more Magicks with his Magic Creation skill to keep himself safe. After all, he was now dragged in the battle royal against six other heroic spirits and their respective Masters.
Castor didn't want to die again. Not with the power in his fingertips. He was now living up his fantasies and didn't want it to end because of his negligence and hubris. There are many things he wanted to with his new life.
He created Absolute Counter Magic first. It was the fusion of Meliodas's and Estarossa's Full Counters. It didn't have the drawbacks like its inspiration, meaning that Castor could attack while using his Absolute Counter. It reflected his enemy's attack, but with quintuple of the attack power.
Then, he created Ultra Instinct Magic, using the Ultra Instinct state from Super Dragon Ball as the inspiration. It worked like the inspiration of this magic, which was the ultimate technique that severs the consciousness from the body in order to allow the body to subconsciously move it to even attack and evade. With this, Castor would become a peerless warrior. This magic is passive.
He also created Reinforcement Magic, which was obvious from its name. Other than those three, he also created several absurd magicks.
And just like that, an hour or so passed by productively. Medea finally stirred up from her power nap and opened her mesmerizing light blue eyes.