Responses
It's Richard (that black haired, red-eye mofo) and his father, the FL's father is just a bug I think his presence won't change much in the story
nope, the sis is completely safe and good (surprise! for once the sis ain't evil in these type of manhwas lol) the evil character is richard and one more character will be coming in the future, who originally was not evil but due to some circumstances, kinda becomes like the villain.
Wait who's the evil character here ? Is it the FL's sister? Cause the sister gives me the good vibes tho