@ly444999
Haven't read the novel but I think the manhwa's answered these all pretty well, though obvs not to the depth of the novel from what others are saying. From Ron's thoughts in the chapter before this, the head of the family is his dad and he hasn't been terribly trashy to his family at all; the OG Cale never fought with his family and consoled his dad when his mom died, so they've still got some kind of bond. They just disapproved of how he ran around town getting drunk and breaking things.
The MC is suspicious of the Ron and Beacrox because he's unnerved by their assassin-ship and is all too aware of how the OG throwdown with Choi Han ended in them siding with and traveling with Choi Han, so he might be anxious that they can still turn on him whenever. Since he got beat by Choi Han so terribly, Cale's body probably wouldn't be able to withstand any attacks from them without the shield.
And about Choi Han -- it seems that Choi Han's just traveling from a decimated village and got around to beating up Cale through coincidence. Doesn't seem like he was on a mission to root out evil nobles, he was just new in town and saw Cale being a jerk at the tea shop or bar and cue the beat down. To prevent that, the MC's been nice to Choi Han instead.
I kind of like the mystery of not knowing the other characters' thoughts while having some creepy character designs and expressions every once in a while. The feels are more intense somehow, because it's more surprising. But this souvenir scene sounds lit