"Don't you always sneak peeks at me and Fumika-san, Sayuki-san?" Shuichi fired back.
Sayuki's cheeks flushed slightly, but she refused to back down. "Feels pretty thrilling, doesn't it?"
"Couldn't it be even more thrilling?" Shuichi tested the waters.
Sayuki scoffed. "Greedy little perv."
After barely surviving two sets of weighted push-ups, Shuichi was utterly exhausted. But Sayuki showed no mercy, urging him to get up for squats.
No weight this time—she was worried he'd collapse. Instead, she upped the difficulty, switching from standard squats to narrow-stance ones.
When it came to bridges, Sayuki checked his flexibility and noticed a clear improvement.
"Your level now? You can try standard bridges. They might not be perfect, but they'll be more effective than the previous forms."
"Can you show me, Sayuki-san? I wanna see what level you're at." Shuichi's intentions were anything but pure.
He'd already studied the progression of Prisoner Fitness. He knew the moves for each level, and bridges? At their peak, they were basically a backbend.
Sayuki didn't think much of it—demonstrating was a normal request—so she started explaining and showing him.
"The so-called bridge is essentially the same as a backbend in dance. If your flexibility is lacking, you can lie on the floor, push up with your hands, and it doesn't matter if your hands and feet aren't super close…"
"Your body looks insanely flexible, Sayuki-san." Shuichi gaped as Sayuki effortlessly did a backbend, grabbing her ankles with her hands.
Sayuki, upside-down, sensed something off and narrowed her eyes. "What sneaky idea are you cooking up now?"
"Seems like you can't fight back in that position, Sayuki-san?" Shuichi winked.
Sayuki sneered, engaging her core to spring back up. But just as she started, Shuichi pushed her back down.
She tried pushing off with her hands, tensing her abs and using her toes to flip into a handstand, but Shuichi grabbed her ankles.
Sideways attempts? Blocked just the same.
Forced to hold the backbend, Sayuki nearly laughed in exasperation, glaring at him. "Are you sure about this? Whatever you do to me now, you'll pay double later."
Shuichi licked his lips. "Worth it. For you, Sayuki-san, I'd let you strangle me with those thighs afterward."
Sayuki rolled her eyes. Dream on.
Seeing she'd stopped struggling, Shuichi finally reached out and pushed her yoga top up—or rather, down, since she was upside-down.
But once the yoga top was out of the way, Shuichi was taken aback. "I thought you always wore sports bras, Sayuki-san. What's with this today…?"
Sayuki's eyelids twitched uncomfortably, her long lashes seeming to hide something. "Is it weird for me to wear this kind?"
"Nah, not weird. Looks great." Shuichi openly admired her bra which confined her boobs. "Should I measure your waist for you? Feels like you might've gained a bit."
"No way!" Sayuki snapped, then after a pause, added, "You're done measuring yet?"
"It's a rare chance. I might get throttled by your thighs any second, so I gotta be thorough. This could be my last request in life." Shuichi's expression was deadly serious.
Sayuki gritted her teeth, and when he let his guard down, she exploded into action.
In a blur of moves too fast to follow, Shuichi found himself clueless as Sayuki's thighs locked around his neck.
His mischievous right wrist was firmly pinned.
"Triangle choke. This is the thigh-strangling you wanted, right? No regrets?" Sayuki teased.
"Hiss…" Shuichi felt the raw power of her sculpted thighs firsthand, his arm aching from the pull, but his mouth kept running. "You could've done this from the start, right, Sayuki-san? But you let me measure you on purpose. Admit it, you were kinda looking forward to this, huh? The teenage boy finally gets a chance for revenge, turning the tables on the dominant older sister, doing all the things she did to him…"
As he spoke, he shamelessly rubbed his face against her smooth, toned thighs.
The ticklish sensation made Sayuki's heart flutter, her thighs tightening slightly. "That's your last word?"
"I got the last word? Let me think…" Shuichi rubbed again. "This neck-between-thighs thing is awesome. My waist wants a turn."
Sayuki felt a sneaky kiss on her thigh, her heart skipping a beat. This was starting to feel dangerous.
She released him, tossing him to the floor.
"Wanna experience it, huh?" Sayuki sneered, pinning him down again, pressing his arms to the floor above his head.
Shuichi's gaze drifted from her face downward, noticing the yoga top still bunched around her neck. His mind wandered.
But then, a sharp pain hit his lips—a familiar sensation. He instantly knew: his lips were busted.
And worse than ever before…
…
Some time later, after a thorough "retribution," Shuichi was finally let go. He slumped against the wall, hair a mess, clothes disheveled, looking like he'd just been ravaged by a delinquent.
Which, well, wasn't far from the truth.
Judging by the satisfied, gleeful look on Sayuki's face, the winner was obvious.
"You're still miles off. Don't think a couple days of training means you can overpower me." Sayuki tilted her sharp chin, licking her lips as if savoring something.
"This isn't fair. You can measure me, but I can't measure you?" Shuichi clutched his mouth, hissing in pain and voicing his complaint.
"Got a problem? Train harder. When you can beat me, you can be unfair too." Sayuki tossed him the towel she'd used to wipe her sweat.
Shuichi caught it and gave it a sniff.
Sayuki rolled her eyes. "It's for wiping, not sniffing."
"Can't help it. You smell too good, Sayuki-san." Shuichi grinned lazily, then wiped the sweat from his face.
After a brief rest, Sayuki effortlessly hoisted him over her shoulder and carried him next door.
…
"Another rough day?" Fumika wasn't as worried as before. Now, seeing Shuichi carted in like this, she just found it amusing.
"Yeah, Sayuki-san's a real taskmaster." Shuichi's words carried a double meaning, and then he was dumped onto the massage table.
"If you didn't play dirty, I wouldn't have to task you." Sayuki shot back, her tone equally loaded.
Fumika smiled at their banter, itching for some alone time with him.
Sensing her sister's eagerness, Sayuki didn't linger. "I'll head next door to handle some stuff. Won't disturb your fun."
Fun…
Fumika's face turned red. The boy did love playing with her legs…
And, well, other places too.
But after Sayuki left, Shuichi suddenly said, "Oh, I've been saying I wanted to see your room, Fumika-san. Can I today?"
His arms took the brunt of today's workout, so his legs were fine. Unlike usual, he didn't need a massage to recover enough to climb stairs.
"Huh? N-Now?" Fumika panicked, caught off guard.
"Not convenient?" Shuichi blinked. "I know your body like the back of my hand by now. There shouldn't be anything more inconvenient, right?"
Know like the back of my hand…
Fumika's heart fluttered at the phrasing. He really did—always studying every inch of her slowly, then confirming with his hands.
So embarrassing.
Some places she couldn't see herself, he'd describe in detail, clearer than she knew herself.
"It's just so sudden, Chiba-kun. I haven't had time to tidy up."
"But I want to see what your room's like normally, not all spruced up." Shuichi insisted.
"Well… okay, then. Just don't laugh at me."
Fumika agreed shyly. He'd seen every part of her body; her room was hardly a big deal.
Shuichi hopped off the massage table, wrapped his arms around her, and kissed her ear. "You're so accommodating, Fumika-san. Makes me wanna bully you real bad."
"Haven't you bullied me enough, Chiba-kun?" Fumika breathed in his scent, nuzzling her face against him.
"Not even close. I've got tons of ideas for bullying you that I haven't tried yet. But no rush—I'm gonna bully you for a lifetime, so we've got time." Shuichi blew softly into her ear.
Fumika felt a tingle shoot straight to her core, her legs going weak. "Chiba-kun… I'm happy to let you bully me…"
"Then let me see how messy your private life really is?" Shuichi teased.
Fumika snapped out of her daze, blushing and scolding playfully, "Not that kind of bullying…"
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