Question What does this person's action mean ?こわばった同じ方の手足をビシリと真っ直ぐに突き出してみせる

I met this text when the author describe a person's action, but find it hard to understand. Hope somebody here could help.
Main character is guiding 2 persons to meet his subordinate T-san, these 2 people said want to meet her (T-san). The 1st person seem to act casually, while the 2nd person in my question looks very nervous.

Main character「おーい、T！」
そんな黄祖から客人を預かって……。俺が足を運んだのは、洛陽の街の一角だった
T「どうかした？ ご主人様」
Main character「ちょっと会わせたい人がいてさ」
俺が視線を向けると、一歩を踏み出したのは二人の女の人。
一人目の一歩は限りなく優雅に。もう一人は、こわばった同じ方の手足をビシリと真っ直ぐに突き出してみせる。
(my guess but not sure: "...The other person stiffly extends the same side's limbs straight out" ???)

Konnichiwa zeroh4nter-san!


一人目の一歩は限りなく優雅に。
The first step of the first woman was taken with boundless grace.

もう一人は、こわばった同じ方の手足をビシリと真っ直ぐに突き出してみせる。
Another woman is so nervous that she simultaneously stretches her right arm and right leg straight out in front of her.


This expression "同じ側の手足を同時に出して歩く" is often used in manga and anime. Normally when people walk, their right hand and left foot move forward.

However, when expressing a state of tension, in Japan it is expressed as the right foot and the right foot moving at the same time.

When people are particularly nervous, their limbs straighten out and they move like cheap robots.


When you see depictions like this, know that they represent severe stress, not broken robots.




By the way, in the past, Japanese people walked by extending their arms and legs on the same side at the same time.

If you're interested, check out "ナンバ歩き：Nanba Aruki".

NANGI

In this context, the phrase "こわばった同じ方の手足をビシリと真っ直ぐに突き出してみせる" is describing a person's nervous or stiff movement. The second woman, unlike the first one, is so tense that she moves her limbs (both arm and leg on the same side) in a rigid, mechanical way almost as if she's a robot trying to walk but struggling to do so smoothly. The image here is of someone feeling very awkward or anxious, and the "ビシリと" emphasizes the sharp, stiff way she extends her limbs.

This type of description is common in manga or anime, where characters under stress might display movements that seem unnaturally rigid. It's a clear way to show tension in a more exaggerated form.