The reason why Cassius appeared so unbothered standing before existences said to be at the very apex of the world was the same as why he acted so nonchalant with Viola. In his secret travels around the world, going from Gate to Gate, he had seen many S-Rank Hunters from afar. Of course, some were stronger than he was at the time.
But these few… they were not part of the "some."
The female S-Rank Hunter leading the large group of S-Rank Hunters was of Russian origin, the same as the others with her. But when she cocked her head slightly and saw that someone besides Viola was still standing, her pretty face turned a bit ugly. She had never heard of a Japanese S-Rank Hunter with the appearance of the man looking past her group as if none of them even mattered.
However, if he was so daring as to disregard their existences, then she would have no choice but to teach him a lesson.
FWIP!