Is this from Hanayama miniseries? I mostly skimmed that, when Hanayama was fighting a vaguely psychic dwarf man.
Didn't know Yujiro cropped up in it.
But yeah, Hanayama going full out doesn't even make a dent in Yujiro, while he actually dodges Kaku Kaioh's hit which is about analogous to the Blast Core. I'm backing Wakatsuki here.