Secret Training with Big Sis Marianne #02
I changed into the clothes that Marianne had given me. The material felt similar to what she was wearing. My pants were essentially shorts that only reached down to my knees. Thanks to that, I quickly figured out the biggest problem with this outfit after putting it on.
'...If I get hard, it'll be obvious right away, won't it?'
These strangely spandex-like pants clung way too tightly to my body. They had looked great when Marianne was wearing them, but now that I had them on, even without an erection the outline was clearly visible. Right now it already looked like a snake had crawled into my pants. If I actually got hard... anyone who saw it might think I was hiding a dagger in there to assassinate her.
Considering the length of the shorts, it seemed like the head of my cock would only barely stay hidden. 'But judging from how she's been acting... maybe she's actually aiming for exactly that.'
Suddenly suggesting couple's yoga, then making me wear something even more revealing than the usual training wrestling uniform. This was blatant seduction even the Artin from before the fifth regression would have noticed immediately.
...Had I ever flirted with her enough to make her come on to me this strongly?
"Well, who cares? She was the one who suggested it first."
If I couldn't figure it out no matter how much I thought about it, I might as well just enjoy the situation. It would be lame to refuse when a woman with no resistance to lewd things was the one initiating. Besides, it was Marianne who had offered first.
"Are you still not done, Artin!"
"I'm finished changing! I'm coming out!"
Right on cue, I heard her calling me. I pushed my cadet uniform aside and stepped out of the changing room.
"What took you so long! Huh? Shouldn't you have changed within ten seconds?"
The moment our eyes met after I left the changing room, Marianne's face flushed bright red as she shouted. I hadn't even been inside for a full minute, yet here she was scolding me for being late. Normally I would have felt wronged, but right now that feeling didn't come up at all.
"Ahaha, sorry about that, sis. I got nervous thinking about training with you and took too long."
"I-If you're nervous, then it can't be helped! This is your first time doing yoga training too, right?"
I could hear the slight tremble in Marianne's voice as she said that. It felt like she was the one more nervous than I was. The way she flinched every time our eyes met, and how instead of her usual majestic lioness-like appearance she looked more like an adorable kitten... it made a smile creep onto my face without me even realizing it.
"S-Should we start right away then? The basics of yoga! The very first step!"
"...The f-first one is?"
"We'll start with warming up! No matter how superhuman you are, suddenly straining unused muscles can still cause injury!"
"Warming up?"
"The stretches we did when you were learning martial arts last time! Let's start with that!"
Huh. Her suggestion was more normal than I'd expected, so I felt a little disappointed. With an outfit like this, I thought she'd come on strong right from the start, but it seemed she was going to take things step by step.
"Alright, first lightly stretch your waist while pushing your chest out...!"
"...Whoa!"
But the moment Marianne began her warm-up stretches, I had no choice but to admit that I was the one who didn't understand anything. The sight of her wearing that yoga outfit, pushing her chest forward while slowly rotating her waist, was itself an action designed to infuriate a man's cock. My gaze instantly locked onto her cleavage.
Those aggressively self-asserting, voluptuous breasts proudly displayed their presence, jiggling softly in time with her waist movements. It made my mouth water. Would it be rude to look away from breasts like those?
"...! A-Are you following along properly? You shouldn't be distracted, you know~?"
Marianne must have noticed my blatant stare. Her face grew even redder, and whether from embarrassment or shame, her body began to tremble, which only added more vibration to the movement of her chest.
Even so, she didn't try to block my gaze or cover her body. Instead, while clearly shy enough to avoid meeting my eyes, she continued the stretches.
'...Is this really a green light?'
I'd been staring openly while prepared to get hit, but seeing her reaction made the last 1% of doubt in my mind completely vanish. For whatever reason, Marianne liked me as passionately as Shao Mei or Agnes did. It would be stupid not to enjoy a situation like this.
'...But if I want to take one more greedy step...?'
Recalling what had happened with Miss Senia, I steeled my resolve and looked at her.
"Um, sis. The purpose of warm-up stretches is to properly loosen up the muscles throughout the entire body, right?"
"Huh? Well, yes? Why are you suddenly asking something so basic...?"
"...Then could you show me how to do the poses from behind as a demonstration?"
"A demonstration from behind... H-Huh?! D-Demonstration?! You mean... my backside?"
For a moment she tilted her head in confusion, not understanding what I'd said. Then she realized the true meaning of my request and blushed even harder than before, clearly shocked. This time I might actually get hit for real.
To be blunt, what I'd just asked was no different from openly saying, "Let me admire your ass." During the third regression, I'd seen a nobleman who told a woman to act cute in exchange for sending troops get his limbs completely shattered. For me to say this took considerable courage.
'...S-She won't hit me, right? She won't. This is a green light, isn't it?'
Even though I'd said it with conviction, the memory of how devastating her punches felt made me clench my teeth as I watched her reaction.
"T-That..."
Her eyes darted around as she stammered, looking extremely conflicted. All I could do was wait anxiously for her answer.
"O-Okay! Proper form is really important for stretches too! R-Right?"
"Yes! That's right, sis! Proper form is crucial!"
And the answer that came was a green light. At the same time, she slowly turned around, presenting her luscious ass and firm hips right in front of me!
"N-Now watch carefully...! You bend your knees deeply like this while keeping your center of gravity stable...!"
She immediately began demonstrating squats right in front of me. The ass that had been restrained by those tight yoga shorts was now thrust out as if on proud display.
'...Fuck, what a perfect childbearing hip... If I grabbed her and thrust in right now, wouldn't she be able to take it without any trouble?'
Then she pushed her ass toward me and smoothly rotated her waist. I leaned my face in until it was practically touching her backside, drinking in the perfect view. The elegant curves that made me think, So this is what an apple hip looks like. And because she wasn't wearing underwear, if I stared hard enough I could just barely make out the shape of her pussy...!
"...Y-You're watching properly, right? Hm? Since your teacher is demonstrating... you have to focus with all your might...?"
Even with her back turned, her detection abilities hadn't disappeared. She must have felt my intense gaze pouring onto her ass because her shoulders were trembling violently. Ah, I wanted to pull my pants down and shove it in right this instant.
But reckless sex would just make me look like an idiot who didn't understand the mood. I suppressed the urge like a gourmet holding back to enjoy an even more delicious dish later.
"W-Warm-up is done here! Then let's start the real yoga... Kyaa?!"
But just because I'd suppressed the impulse didn't mean the lust that had already been fanned into flames was gone. My little Artin was proudly showing off its massive twenty-centimeter length, fully erect and thick.
At first I wondered if I should hide it, but I decided against it. Since Marianne was showing me everything like this for my sake, it wouldn't be right for me to hide my own shame.
"...U-Um. It looks like... you're really motivated, Artin...?"
Whether this was her first time seeing an erection this intense or her first time seeing a cock at all, Marianne swallowed dryly, unable to tear her eyes away from my dick. When I'd been staring at her breasts earlier, was this how she'd felt looking at me?
"Yes. Right now, I really want to do 'yoga' with you, sis."
"...'Yoga,' huh?"
"Yes. 'Yoga.'"
"..."
When my cock twitched, she flinched in surprise. After getting my dick this worked up, she was reacting like a shy virgin. It was honestly incredible. I wanted to fuck her right away. But I held back one more time.
"...Then shall we start the yoga, sis?"
"Y-Yeah, we should! Mhm! Yoga, right? Yoga!"
Marianne had definitely understood my little metaphor. The way her face turned completely red and she hurriedly sat down on the mat proved it. Ah, what should I do? Teasing her when she reacted so innocently was way too fun.
"Th-Then let's start with the diamond pose!"
"...Diamond pose?"
"Yeah! It's not that hard, so just follow what I do!"
Following her confident lead, I sat facing her and copied the pose she showed me.
"First stretch your legs out straight, then put your feet together and spread them to the sides to form a diamond shape! That's it!"
"...Yeah, it's not difficult at all."
It was just a pose where we sat facing each other with our feet pressed together. Nothing special. But because of what we were wearing, it was anything but ordinary.
First of all, her nipples were visibly poking against the fabric, probably from the excitement of our earlier conversation and stretches. And though it was very faint, in this position I could see the outline of her camel toe...!
Plus, she could clearly see my erect cock too. The way she deliberately made eye contact and forced a smile was incredibly cute.
"And from this position we do stretches. We hold each other's hands and take turns leaning our upper bodies forward. See? Not hard, right?"
"I see. Could you demonstrate by leaning forward first, sis?"
"Of course! Watch what I do and follow along!"
Watching her confidently call out with her fangs glinting, I deliberately interlocked our fingers tightly as I grabbed her outstretched hand.
"...A-Artin? That's not... how you're supposed to hold it..."
"Oh? Isn't this how it's done?"
When she looked at me with trembling, flustered eyes, I played dumb. After all, this world's Artin was genuinely experiencing yoga for the first time, so it was perfectly believable that he wouldn't know.
"Y-You should hold it lightly, like you're cupping it! Though holding it like this is fine too."
Whether my act of ignorance had worked or she was just going along with it, she glanced at our interlocked fingers and continued explaining in a shaky voice.
"...M-Mhm. Then first, slowly lean your upper body forward like thiiiis..."
When I pulled my shoulders back and drew her toward me, she bent forward with surprising flexibility, then froze completely. Because her eyes had met directly with the tip of my cock, which had peeked out slightly from my short shorts.
"Th... Th... Next is... um..."
It really seemed like this was her first time seeing a cock up close. She started stuttering like a broken machine, her gaze fixed solely on my glans.
"Sis? What are you doing? We have to keep going, right?"
"...Hya! Right. W-Would you like to try next, Artin?"
"Yes. So I just pull like this while pushing with my legs to lean forward, right?"
I stretched my legs out and leaned my upper body forward with surprising flexibility, just as she'd shown me. Honestly, while I wasn't as flexible as her, I'd done plenty of flexibility training while learning swordsmanship and martial arts, so it wasn't difficult at all.
"That's right. Just like that. Hold the pose for ten seconds..."
"Then it's your turn again, right? Here, I'll pull you forward."
"Wait, h-hold on...!"
When I pulled her upper body toward me again, she naturally made eye contact with my cock once more.
"You said ten seconds, right? One... twooo... threeee..."
I deliberately counted slowly, holding her in place. Even so, she didn't say a word about my rudeness and simply stared at my glans and cock with a burning gaze.
I wondered what she was imagining right now. What was she thinking about doing with my dick? Since I couldn't read minds, I had no way of knowing.
"...Ten. You can raise your head now."
"M-Mhm...! So that's how it's done. Easy, right? Hahaha..."
But I could see it. The crotch of her pants, right over her pussy, had begun to grow just slightly wet. This yoga session was going to get even more fun from here on out.