What do you mean by she hasn't shaken off her damage? -Akyuu

If you attack at right where it hurts... -Yuuka

...people will usually be in pain even if it's from light attacks. -Yuuka

For example...

First slap and such doesn't hurt that much, right?

However, if the damage accumulates from getting hit a number of times...

...you won't be able to endure it even though it's the same attack.

But I'm already feeling one hell of a pain from on the first one alone!!!

Ah, look, it's the back breaker. -Akyuu

Looks like Sakuya has the advantage in terms of techniques. -Akyuu

Episode 956: The left arm that can't get away. From the Artist's Pixiv page.