There are only a few legitimate koryu still extant, and many more modern impersonations or approximations - some clearly worthwhile, some... less so.
It isn't a koryu - it's a 'reconstruction' based on the old densho. They seem very invested in batto, and come up with thousands of permutations of dramatic battojutsu scenarios. Not bad, just not koryu.
Check out this koryu school, their battojutsu is really impressive!