A few moments later, Kei walked out of the bathroom.
"…!?!"
Charlie's eyes widened instantly. Among all the vulgar and provocative outfits Kei had ever worn during their intimate sessions, this was undoubtedly the most sensual, the most indecent, and the most instinctually provoking to a man.
Kei, now a full 18 years old, had a plump body with beautiful curves. Her breast size, equivalent to Fujiwara Chika's, was an indirect result of Charlie's own contribution through routine massages every time they made love.
However, none of that was his main focus now.
What made Charlie gasp was how her body was barely covered.
Only three pieces of skin-colored tape were placed on strategic points. Two of them covered the center of her breasts, but they were too small and did not conceal the pink areolas, which were hardened from nervousness and the chill. The third piece of tape was stuck vertically on her vulva, only thinly concealing its central cleavage.
In fact, her appearance was more shameful than being completely naked; it was as if she was just waiting to be unveiled.
As an accessory, there was a headband with a pair of black cat ears on her head. And the most striking thing was a black furry cat tail with a curved tip, inserted between her plump buttocks, jutting out provocatively. Clearly, there was a small vibrating toy at the base of the tail.
"Gulp…"
Charlie swallowed hard. The sound was loud in the silence of the room. He truly hadn't expected Kei to be this bold.
"Guh… This is more embarrassing than I imagined…" Kei whispered, her cheeks blazing red all the way to her ears.
Her hands wanted to cover her body, but the determination in her eyes was stronger. She was not the type to retreat halfway. With small, somewhat stiff steps—certainly uncomfortable due to the foreign object in her anus—she approached where Charlie was sitting.
"G-Good night, Nyaa~…"
Kei tried to smile temptingly even though her voice was trembling.
"Tonight, Shirogane Kei will be a stray cat for you, Nyaaa~"
She posed slightly, bending her hands like cat claws, adding the word 'Nyaa' to deepen her role.
"Nyaaa?"
Kei sounded confused when Charlie suddenly stood up and placed both hands on her hot shoulders.
Charlie's face looked dark; his eyes, usually calm and measured, were now like burning blue flames.
"I'm sorry, Kei. You're too cute. I can't hold back anymore."
"Kyaaa!"
After saying that, Charlie pushed her onto the bed. Kei let out a small shriek, surprised by his sudden, aggressive demeanor.
"C-Charlie-san?"
This was the first time Kei had witnessed Charlie completely lose control and turn feral. There was no more adult composure, only pure, overflowing desire.
"Nyaaa~!"
Kei let out another embarrassing sound as Charlie held the base of her cat tail and pulled it slightly. An electric sensation immediately spread from there.
"This is your fault, Kei. Where did you learn all this?" Charlie's voice was low and hoarse. "Unless he's gay or impotent, no man wouldn't fall into a honey trap like this. Even monks who chant sutras every day would revert to their primal nature if you appeared looking like this."
With an expert motion, Charlie spread Kei's thighs into an M-shape, mercilessly opening her entire view. He deliberately played with the tail, pulling and pushing it slowly, provoking choked moans from Kei.
"Charlie-san… it feels so strange…"
Kei's face was red like a boiled crab. Her hand covered her mouth, trying to suppress the moan that wanted to escape.
"Don't tell me the surprise you mentioned was letting me take the virginity of your other hole?" Charlie asked, his gaze fixed on Kei's tear-filled eyes.
"…"
Faced with the direct question, Kei turned her face away, hiding her expression of mixed shame and fear. Her voice was barely audible.
"Pervert! Charlie-san already knows the answer, don't make a girl say it…"
"I see." Charlie muttered, a slight smile appearing. "Speaking of which, this will also be the first time I've tried the back hole. In other words, you are the 'first' for me in this area, Kei."
"Really?!" Kei immediately turned her head, her eyes sparkling.
For girls, 'firsts' in anything from a loved one are incredibly precious. Getting Charlie's 'first time' in this area made her heart blossom, pushing away some of her shame.
"When have I ever lied to you?" Charlie stroked her hot cheek. "Alright, enough talk here."
With quick and efficient movements, he stripped off his own clothes in less than five seconds. Then, more slowly and with intention, he began to pull the cat tail out of Kei's body.
"Ah~… Charlie-san…!"
With every small 'ball' that was part of the toy tail being pulled out of her tight anus, Kei writhed and even reached a small orgasm. Her body trembled, the tape on her body wet with sweat.
"Hah… Hah… I-I have cleaned out my bowels until they were completely empty… And douched… Don't worry, Charlie-san, everything is… hygienic…" Kei interrupted between her ragged breaths, not forgetting to offer reassurance.
"You're very thoughtful, Kei." Charlie praised. "Where is the oil? It will be smoother with oil."
"N-No need for oil. Compared to the pain and fear I experienced when the world apocalypse began… this pain is nothing. I… I want to feel everything directly without a mediator."
"… Alright."
Charlie finally relented after seeing the firmness in the girl's eyes. He knew Kei was stubborn. Once she decided on something, it was nearly impossible to change her mind.
"If it hurts, tell me. I will stop."
"Mm." Kei nodded, then looked directly at Charlie. Her gaze was soft yet full of total surrender. "With this… I have surrendered my all to you, Charlie. So… take responsibility, okay? Never… leave me."
"Yes." Charlie answered, emphasizing every word. "I promise."
"…"
Charlie wasted no more time. After making sure Kei was as relaxed as possible, he positioned the tip of his manhood, which was already at the still-red, puckered gate, taut from tension.
"Take a deep breath, Kei."
Kei nodded, her eyes tightly shut. Her hands gripped the sheets tightly.
With a slow yet unstoppable thrust, Charlie began to enter.
"Nghhh—!!!"
Kei's body immediately arched. A sharp hiss escaped from between her locked teeth. A sharp, unfamiliar pain surged from the point of invasion.
Tears streamed down her temples, but she tried hard not to scream for him to stop. She bit her lower lip until it nearly bled, resisting the wave of pain that made her head dizzy.
Charlie paused for a moment, giving her time to adjust. His hand gently stroked Kei's stomach, trying to soothe her.
"Do you want to continue?"
"C-Continue." Kei answered with a sob. "Slow… slowly…"
Charlie nodded, then continued the penetration, millimeter by millimeter, with patience that was almost agonizing for himself. He could feel every fold, every tightness of the grip that no one had ever touched.
After what felt like an eternity for Kei, Charlie finally entered completely. Both were silent, savoring the sensation of this incredibly intimate and forbidden union.
Then, Charlie began to move. Slowly at first, giving Kei time to adapt.
Kei's moans of pain slowly transformed into mixed whimpers of pain and pleasure that began to surge. Her initially stiff body began to soften, even starting to follow Charlie's rhythm.
"A-Ah… Charlie-san… there…"
Hearing that, Charlie began to increase speed and power. The sound of skin colliding and loud groans began to fill the room.
Charlie dominated completely, holding Kei's hips firmly, setting the pace as he desired. Every deep, strong thrust made Kei scream, her hands no longer gripping the sheets but reaching for his hand.
As the pain completely vanished and was replaced by a fullness and insane stimulation reaching previously untouched points, Kei began to lose consciousness. The tape on her body was wet with sweat and other bodily fluids.
Feeling his climax approaching, Charlie suddenly grabbed the edge of the tape covering Kei's vulva. With a swift movement, he ripped it off! Then, he continued to the two pieces of tape on her breasts.
"Charlie—!" Kei cried out, both surprised and aroused by Charlie's sudden and somewhat rough action.
Now, before Charlie lay Kei's fully exposed body, without a single barrier. Only the removed cat tail and the headband still perched on her head remained, adding to an aura of abandonment and possession.
"Inside… Charlie… give me everything inside…!" Kei pleaded with teary eyes, no longer caring.
That request became the final trigger. With a final thrust, Charlie reached his climax. His body tensed, a deep groan escaping his chest as he released all his contents into Kei's rectum, filling the tight space with heat and his fluid.
Kei let out a long scream, her body shaking violently from the orgasm that swept over her, stronger than anything she had ever felt before. It felt like she was truly 'owned' to her deepest and most secret parts.
They rested in exhaustion, heavy breaths crossing each other. Charlie remained deeply embedded in her body, reluctant to break the bond they had just forged. Kei, with closed eyes and a faint smile on her tired lips, felt the fullness and warmth spreading inside her abdomen.