...…
Rhaba was staring at Shin with a astounded look at his face, especially when he saw the pair of Black Panther and White Tiger behind the latter. He was also a Martial-Art Practitioner in the Real World so he was also aware of some things regarding Martial-Arts, but this was his first time learning that it was possible for a person to have two types of Aura Manifestation.
What Rhaba didn't know, Shin was only doing this unconsciously. Shin only knew that he was releasing his Aura Manifestation but he was not aware that he was releasing two of them at the same time.
And since Rhaba realized that his situation was going south, he had no choice but to admit that he was in deep trouble this time. Given that, he really needed to reveal all of his cards now; he stopped underestimating Shin and really gone all-out on the get-go.