Actually.
Abe, who was on the scene, also had 'connections' to find a formal knight leader.
However, there was a problem.
They were engaged in the School Adventurer Guild, putting out tasks assigned to Apprentice Knights.
Having them led by a knight leader would be prohibited (similar to power-leveling).
Moreover, once a "Demon" issue was involved, most knights would choose to report the intelligence to the Knight Regiment they belonged to, rather than dealing with it on their own.
Abe was the beloved grandson of Captain Kaimon. Not a single knight in the Behemoth Knight Group dared to take this risk...In case anything happened to Abe, their uncountable lives might not be enough to answer for it.
Therefore, it was crucial at this point for Han Dong to find a knight who was 'trustworthy'.
.......
"Senior Cass...right?"
Just as Han Dong led his two friends into the private room.