I'm guessing credits are in order for this ep given other confirmations/presumes, so I think 0:00 - 0:06 could be Tamako Horiuchi. I'm not really well versed with her style so I'm refraining from tagging, but it looks a tad different from 0:06 - End which I assume is what's presumed to be Kiso right now.

Imo 0:04 - 0:06 should definitely be kiso too