Mushoku Tensei LN Vol.2 Extra Chapter: The Power of Abs

"Today we will train abs."

Ghyslaine declared before Eris and me.
The location was indoors, the room otherwise used as a dance hall.
Usually, Ghyslaine would make her students train sword swings through rain or hail, but today's was a thunderstorm for the ages, so even we were forced to train inside.

"For this set, you need to form into a pair.  Rudeus, come by my feet.  Eris, watch carefully."

Paired sit up type of training also exists in this world.
Ghyslaine sat down with her knees bent with me holding down her feet.
Those brown abs and twin ample peaks filled my eyes.
Say, her leg muscles were certainly not to be trifled with, as if made of steel.  Firm but flexible, not overly stiff.  Legs of a true carnivore?  I'm no expert of carnivores, but these certainly would fit the bill.
If I train properly, could  mine ever reach this level?
"The person lying down places her hands behind her head, and lift her head up like this."
Ghyslaine performed a sit up as she explained.
Her 6 abdominal muscles glistered before my eyes.
"Do you understand, Rudeus?"
"Yes... Truly.... wonderful..."
Her sip ups were indeed beautiful to behold.
Elevating her upper body in one smooth motion, then brought back down at an equal pace.
Not a brief flexing of the abs, the reactionary use of force by amateur.
Rather, an expert's use of constant resistance force against the abs.
How could a simple set of sit up be so beautiful?
Because that's the power of the abs.
Ghyslaine's well toned abs are like a set of cranes, strong and steady as they lifted up her upper body, but gentle and careful as they brought it back down.
Incredible abs.
Although just above those abs, are a set of towering peaks, equally magnificent to behold, quivering from movement, but so mesmerizing were her abs that they failed to distract me.
I want those abs.  Certainly, all men would thought the same?  Those sacrosanct, pinnacle of muscles.
Laying before my eyes.
"You know what to do now right?  Alright, Eris will start."
"I understand."
"Rudeus helps hold her down.  That way, even when I'm not around, you two can alternate and help each other train your abs."
After that explanation, Ghyslaine stood back up.
Good bye, abs.
If I train properly, will I have abs like those?  In other to have well honed abs like those, I must start working on it right away.

"You better hold me down properly!"
"Yes, yes."
Eris replaced Ghyslaine.  Almost as trying to kick me in the belly as she squeezed in.
I held her feet.
Compared to Ghyslaine, they're akin to slime.
They're well trained for her age, just a world's apart compared to Ghyslaine's.
Of course, not all women have to be Ghyslaine, so Eris is fine the way she is.
"Alright, I'm starting."
"Em, go ahead."
Eris began her reps.
It's only natural given the circumstance, but her sit ups are certainly amatuer.  A fit of strength at the beginning, rushing towards me as if trying to headbutt me.  Then just as quickly landing back down.  Could she even train her abs properly like this?  If that's how she always done it, what effect could come from this?
But after around fifty reps, I had a slight change of mind.
Eris' sit ups did not slow.
Because of how chubby I was in my previous life, I knew well.. that without training your abdominal muscles, there's no way to keep up this speed for twenty reps.
And Eris wasn't even catching her breath.  This must be the result of her training.
Perhaps she already had a six pack?
No, even if not six, at least four or a couple...
"..."
Eris was also wearing a loose garment for training, but unlike Ghyslaine, her belly wasn't showing.
I couldn't see her abs.
What should I do, to confirm my suspicions?
Is there a method in which to confirm... the unobservable?
... Why, of course, I just need to get a rub.
"Excuse me."
"Eek!"
I stretched my hand under Eris' hems, in search of her abdominal muscle.
Her skin, warm to touch from exercise, layered with a thin coat of fat, I could cut the recesses of her muscles... one... two...
"Where are you touching!"
In the next moment, Eris lifted her upper body with incredible speed and headbutt me.
So hard she hit, I wonder if my face had concaved.
Why was Eris' headbutt so powerful?
Ah, the power of abs!  Like a set of electric winch, its massive torque lifted up the weights of her head and upper body.  Only such strength could accomplish a move like that.
In conclusion, Eris also own an impressive set of abs.
Without needing a handful, I understood now... My final thoughts, as my conscious fade.