Vasya probably took a liking to MC cause MC is his type, and that MC is beneficial to Vasya as he has ways of keeping $ under the radar. You can see that the MC knows that this is bad, but MC's type is Vasya. So to MC, Vasya isn't that bad. (Not only is Vasya, MC's type but he is also a very powerful man so hes not got much of a choice) I can see why the MC acts the way he does, I mean look at how bad his life has been. This is somewhat normal for him now, it's not supposed to be but it is for MC. :(