Female Knight seems to want to drag me over to him quickly. She starts explaining the situation.
“It’s a practitioner of a legendary style, Hengen Musou. That person volunteered to lend Iwatani-dono their power.” (Female Knight)[3]
“Hengen Musou? What is that? What sort of style?” (Naofumi)
It sounds like something someone with Chuunibyou would think of.