What speed level is this?

[Dereck03]

I'm not very good with speed levels below Infinite and Immesurable so I wanted to ask for some varied opinions about this.

On the outskirts of Alkazam City leading out to the field were two people, a man and a woman, fighting with swords.

One was the girl with long dark flowing hair, Irisdina Francilt. With a dance so graceful she was like a butterfly fluttering through a field, she flashes the rapier in one hand and slashes at her opponent. Its speed was like a flash (of light). The girl unleashed successive attacks at a speed ordinary people not be able to see clearly with the naked eye.

The other was the boy with blue eyes and a sword at his disposal, Nozumu Bountis. He was deflecting the rapid successive attacks, which flashed so brightly that mere afterimages were made, just by merely moving his readied blade. However, it appears to becoming too difficult to deflect all of them and so, the boy gradually retreated.

Irisdina's successive attacks, varying in its speed gradually wore down Nozomu's defense while Nozomu was slowly becoming unable to fend them off. Her rapier slowly started to graze his body, yet Irisidina was unable to complete her assault on the boy before her.

 

[DarkDragonMedeus]

Subsonic at bare minimum.