At Misaki's request, they decided to start by filling the bath.
"This might take a while. What do you want to do?"
"Hmm... Let's do this."
Standing in the bath, Misaki threw herself into Kotaro's arms with a tight embrace. Her soft, full breasts squished against his chest as she nuzzled her face into his chest and purred adorably. He felt like he might faint.
"Kotaro... mmn..."
She closed her eyes dreamily, silently begging for a kiss. He wrapped his arms around her slender back, gently tugging her hips closer as their lips met.
"Mmm... ah?"
As their tongues intertwined and he playfully tugged at her hips, Misaki's voluptuous body trembled and swayed.
"Senior Misaki... does this feel good here?"
"Mmm... mmn? Ah... ah... Maybe... I don't know why... ah... fah... I don't really understand, but my hips... they're feeling all... fuzzy..."
She whispered in a husky voice, her hips trembling uncontrollably. Gripping his shaft with both hands as if for support, she murmured:
"Mmm... Ugh... Hap... Heah... Kotaro, Kotaro... Mmm... Hnym... Mmm..."
Her tongue, thick with saliva, explored his glans and shaft with tender affection. His cock, now rock-hard, seemed to have forgotten its earlier climax.
"It'll take a while for the bath to fill, but I can't wait to be inside you, Misaki-senpai."
"Mmm... I see. I... might... want that too."
She mumbled softly, glancing up at him through her long, damp eyelashes.
Misaki-senpai is truly beautiful...
We kissed again, lost in each other. When I took her small tongue between my lips and sucked gently, a cute, dazed sound escaped her: "Heaah...?"
When we parted, Misaki abruptly turned her back to me. Pressing her hands against the wall, she thrust her large, round buttocks out. Her thick pubes were plastered to her skin, sticky with sweat and love juice.
"How about this...? Ahn! Hey, you need to set the mood a little more..."
Without hesitation, I pressed the tip of my cock against her glistening petals. Misaki turned her head slightly, her voice dripping with honeyed arousal.
"Seriously, Kotaro, when did you get so lewd?"
"I think I was average before... But ever since we started doing this, my desire became bottomless."
"...You pervert. It's just because we're here. Nngh, nnnngh...!"
Pinching the erect shaft between my thumb and forefinger, I guided it to the proper place. Following Misaki-senpai's lead, I thrust my hips forward, and my swollen flesh was hungrily devoured by her slick, honeyed folds.
"Ah... no, no... it feels so good..."
As my thick shaft slid deeper, Misaki's voice grew syrupy sweet, as if she'd spilled honey. She began to grind her hips, taking me deeper and deeper.
"Ugh! Wait, Misaki-senpai...!"
Shaken by her unexpectedly wanton behavior, I was completely engulfed before I knew it. Even when I stopped moving, her back arched rhythmically, her slick folds clenching around me in a delicious grip.
"I can't... I can't help it... when Kotaro fucks me like this, I can't help making noise..."
Misaki covered her mouth with her hand and slowly turned around. Her glistening eyes locked onto me as she took my cock deep into her mouth, her hips swaying sensually.
"...That was just an act, right?"
"Mmm... no, it's not like that...? Hyaah, nnn, nfuuu...!"
I gripped her plump buttocks and abruptly sped up my thrusts, eliciting a muffled moan from her lips.
"Come on, keep your mouth covered properly! I don't want anyone hearing Misaki-senpai's cute, erotic voice..."
"Mmm...! Nn, fu, nfuuu...!"
Misaki's spine arched violently, her vaginal muscles clenching so tightly it felt like they were about to tear me apart. A gush of love juice spilled from our connection, splattering into the accumulating bathwater with soft plops.
"Nfuuu... Haaah, ah, annn...!"
"Your hands are slipping, aren't they? Well, I suppose I'll have to plug them for you."
He whispered in a sadistic tone, seizing both of Misaki's wrists and securing them behind her back. With his free hand, he covered her mouth as the folds enveloping his shaft grew even slicker.
"What's this? You suddenly got wet. Did you enjoy being violated?"
"Ngh... By some strange chance, it's... mmph, fuh, mmgh...!"
Still pinching Misaki's mouth and wrists, he began thrusting rhythmically and forcefully. The knees of Misaki, submerged in the bathwater, jerked spasmodically, while her plump buttocks shook unnaturally back and forth, left and right, as if she were subconsciously trying to savor his manhood even more.
"Misaki-senpai loves to lick, don't you? Now, lick my fingers too."
"Ngh... Haa, chu, chup, ngh..."
As Kotaro repeated his shallow thrusts, inserting his finger into Misaki's mouth, she eagerly wrapped her warm tongue around it without hesitation. The raw sensation, different from fellatio, flooded his mind.
"Your insides are soaking wet, Misaki-senpai. Aren't you getting too turned on?"
He whispered words to stoke her masochistic desires, his rhythmic thrusts accompanied by crisp smacking sounds. Misaki only turned her head back, tears welling in her eyes as she groaned shakily, "Ugh... ugh..."
"Haaah, hap, nnn, nfuuu... Kotaro, hap, no, I... I'm... I'm gonna... I'm gonna c-cum... nnnn!"
The moment Misaki suddenly clamped her lips around Kotaro's finger, her vaginal muscles clenched around his shaft, her plump buttocks spasming violently. Her knees buckled, but she continued to grind her hips against him, as if both were fueling each other's arousal.
"O-oh...!"
Holding back just before climax, Misaki's upper body collapsed limply, as if her spine had melted.
"I... I can't stand anymore..."
"Alright then. Shall we continue sitting down? The bath is filling up now."
"Huh? Oh, uh... yeah..."
Misaki was momentarily bewildered, but she must have remembered that she was the one who suggested doing it in the bath. Her cheeks flushed faintly with an emotion separate from pleasure, and she nodded.
"Okay... then."
"Mmm...nnn..."
After pulling out momentarily, Misaki's plump buttocks trembled adorably. I gently stroked her dewy mounds before getting into the bath first. The tub was only half-filled, but that would be perfect once both of us were in.
"Here you go, Misaki-senpai. After you."
In the bathwater, Misaki playfully pointed at my erect penis and let out a cute, "Uwaa..."
"This... it's going to go all the way inside me, right? Isn't this just so ecchi?"
"Exactly. I'm watching it with all my might."
"Uwaa... You Sadistic Glasses..."
Do I really have such a strong 'glasses' image...?
I've never worn glasses in front of Misaki-senpai before... I was thinking, when she turned her back to me, her cheeks flushed with embarrassment. She placed her hands on the edge of the bath and slowly lowered her smooth, white buttocks.
"Naaah... Haa... Haaaaah... So big..."
Squelch, squelch... As the warm sensation enveloped my penis, Misaki moaned in a voice that melted. When her pale, smooth buttocks completely engulfed my shaft, she let out a soft, "Hofuu..." like she was soaking in a hot spring. Her white back trembled slightly.
"This... I think I'm going to get addicted to this..."
"Me too."
The two of them sighed in unison, like a long-married couple, as they simultaneously experienced the pleasure of bathing and the pleasure of making love.
"Your skin is so beautiful, Misaki-senpai."
"Mmm? Haaah...?"
A soft, girlish sound escaped her lips as he gently kissed the nape of her neck. He wrapped his arms around her waist, holding her close, and gently stroked her hair. Misaki, who was two sizes smaller than him, felt incredibly comfortable being embraced from behind.
"...You're treating me like a child."
"I love how small you are, Misaki-senpai."
"...Hmph."
After bluntly expressing his feelings, Misaki puffed out her cheeks and playfully patted Kotaro's cheek.
"Mmm, ah..."
As he kneaded her soft breasts underwater, Misaki tilted her head back and let out a sensual moan.
"It's just... I've been teased about being small my whole life, and I thought I was used to it. But this... this is the first time someone's ever given me such a straightforward, unfiltered compliment."
"Really?"
"Mmm, ah, ah, there—yes, I love that... Oh, right, what were we talking about?"
"Sorry, I don't know what came over me..."
As soon as I started thrusting slowly, Misaki instantly forgot what we were talking about.
"Mmm, ah, haaah... Yes, I love that... It feels so good, keep going... Right, right. I've had plenty of people 'dote' on me before, but Kotaro is the first guy to come at me with actual romantic feelings."
"Seriously? But you're so beautiful, cute, adorable, wonderful, and captivating..."
"Hey, hey, hey! Don't get carried away with all the compliments! Stop pinching my nipples! Don't move your hips so much...!"
When I suddenly started scolding her, Misaki protested in a voice that sounded like she was about to cry. How cute.
"Senior Misaki, you've become quite sensitive, haven't you?"
"Mmm... Ah... Nngh... Maybe. I've been feeling little orgasms over and over for a while now. When you were thrusting hard earlier, I almost fainted."
"Really?"
"Why is my penis getting so big...?"
Inside her, my shaft was throbbing and swelling.
"Haaah... So I was this ecchi all along? Even I'm surprised."
"Yeah, who knew you were such a masochist?"
"...Did we just have a moment of cognitive dissonance?"
"Let's just say both answers are correct, okay?"
Even as we locked eyes, I kept thrusting steadily.
"Ah... Ugh... Nngh... Nngh...! ...Kotaro, are you about to come? Your penis is getting really big!"
"Ugh... yeah, I think I'm about to come," Misaki whispered into Kotaro's ear, her tongue slithering along his earlobe as she writhed her hips. Just as Senpai had said, the urge to ejaculate was slowly building inside him.
"Ah, ah, ah, mmh, nfu, yaaan... Kotaro, I can't hold back my moans anymore. Kiss me? Let's kiss? Then you can let it all out—fill me up completely. All of it. Please?"
"..."
As he gritted his teeth against the molten heat of her inner walls, she purred those devastating words in her sweetest, most innocent voice. There was no time to respond verbally; their lips met in a desperate kiss.
"Mmm... mm, mm, mmm! Mm, heh, lerr, nchuu... ha, nhaah...!"
He grabbed her hands, which were kneading his breasts, and thrust his hips rhythmically, almost tenderly. The semen, which had been slowly building inside him, surged up his urethra the moment his restraint snapped.
"Ugh... mmhh...!"
Misaki pressed her thin lips together as tightly as she could, pouring earnest moans into his mouth. Her clear, beautiful voice turned syrupy and distorted, invading his mind completely.
It's too good, too happy, I don't even know what's happening...!
Kotaro's eyes glazed over as he emptied his semen deep into Misaki's uterus.
*****
After getting out of the bath, Misaki had changed into a one-piece nightgown. Its adorably cliché "bedroom attire" vibe made him gulp.
"Kotaro, come here."
"Huh? Oh, yes..."
Misaki smirked at his reaction, then climbed onto the bed and settled into a girl's sitting position. She patted her thigh and beckoned him over.
Huh? What...?
Could she possibly be...? he thought, following her instructions: "Right, face this way, and put your head here."
I rested my head against her plump thigh, and Misaki leaned down from above, smiling smugly as she peered down at me.
"Well? What do you think of my knee pillow?"
"I want to live here."
"How would you even do that?!"
When I told her my honest thoughts, Misaki was genuinely startled.
Honestly, who could have predicted this...? she muttered under her breath, gently stroking my forehead.
"Ah..."
"Mmm, does that feel good?"
"Yes, it's... so comforting."
"Heh heh, I see. You're such a sweetie, Kotaro."
"...Misaki-senpai, I love you."
"Huh?!"
The words of adoration slipped out so naturally. Misaki's beaming face instantly turned crimson.
She's truly an amazing person...
Sometimes she seemed so rational, yet other times mischievous.
Sometimes like a submissive, only to suddenly tease me.
Her expressions shifted constantly, never settling, but every one of them felt like her. The way the lead kept changing between us was strangely comforting.
"Want to relax for a while? Kotaro, you can sleep if you want. I'll just enjoy watching your cute sleeping face."
"Please don't..." he mumbled.
"Ah, you're just too adorable..." Misaki sighed, ruffling his hair affectionately.
I want to know more about Misaki-senpai's wonderful qualities...
Drowsy, he gazed at Misaki's soft smile, entranced.
Later, Kotaro drifted off for about ten minutes, and then Misaki used his lap as a pillow. This time, she slept peacefully for about ten minutes.
After that, they continued chatting amiably. Along the way, they went to the convenience store, hastily hid when a member of the Social Welfare Research Society passed by, giggled at the unexpected thrill, returned to the room, kissed again, and finally settled close together, falling asleep.