I have to admit that it makes me happy to see so much thought put into the plot and why they behave the way they do towards the MC.Shit mates, not just the sister. The mother is not any better, this update we learned that the MC is 19 years old and none of those cunts seam to care that he just stumbles though the city with no money or direction. He is like a fucking dog with a chip and a tag that they just fetch when they need to tell him something. Just like a dog they do not care if he sleeps under a roof or not. Sad to see that the only care is provided by A dude with tits.
I am sure that there is a purpose for those characters to be like that but if it is something other that corruption or domination I do not see it.
Indeed it will not have jumped out at you, the MC receives few answers and attention from his two relatives but indeed each one has his own TOTALLY opposite reason to be like that with him...
The MC will have to keep pulling the string of his destiny to unravel all this.