That one particular scene where Yume transitions from CGI to 2D animation was quite flawless, and Minato!Kanami fighting against Tagitsuhime was quite a spectacle. (There were seven blade switches over a quick-paced 10-second brawl against the Great Aradama.) I also haven't actually seen CGI used to make sword combat as accurate as possible. Some people claim that playing the fight scenes frame by frame exposes the extreme attention to detail by the CGI team.
Toji no Miko employs Hisane Kannazuki (
@k_hisane) for kenjutsu supervision together with Kobujutsu Touzen Zefu-kai (
@zefu_kai) as a collaborator.