wdym he doesn't like her? as a friend or as a lover?
his hostility is probably due to his distrust in humans in general and also i think he simply doesn't want her to approach him to protect her as he is a monster
this felt more like a spin-off than a sequel. it's like the director really wanted a season 2 but none of his main actors were available for more than a cameo role (except for go minsi) so he gave us instead a bunch of new characters to fill the time