Even though they were both grinning at each other, their grins started to slowly turn as they finds that both of them are more or less equal in terms of strength. It went from grinning in excitement to grinding their teeth trying to overpower the other.
Pati was very surprised that it seems the Zombie in front of him has the edge in strength.
The increase in strength from the mid-Second Circle Zombie to an upper Second Circle Zombie is much more than he had expected, it's almost doubled in difficulty which shouldn't be the case.
Either it's just that strong or this Zombie in front of him is different than the others.
Out of nowhere as if the system can hear Pati's wondering thoughts inside his mind, a couple of messages appeared giving a series of information that gives enough reason for Pati to trust that this Zombie is just not normal.
[You have engaged in a fight with a Boss Zombie!]
[Scanning the Zombie...]
[Completed!]