Nothing much happened in the classes for sword arts. Ryfin was teaching us how to gain more control over our magikens, how to use them efficiently, and how to blend the abilities it increased into our sword styles.
I am not proud to say this but at this point in the sword art classes, I was the only student without a magiken. This, of course, invited unwanted attention to me but it's been a while since I was this and all the taunts and light bullying had stopped by now.
Now, I was able to magiken with the help of the Requiem sword but why I wasn't using it here, there were two reasons for it.
First, I had no fixed control over it. During my fight with the klauth, I was completely overwhelmed by its power and my enhanced sense that I wasn't even able to deliver a straight slash. I don't want to lose control here, hence I was better off not doing it.