Well jun said his mom doesn't even know what yohan likes and doesn't like. His sister seems to not be too caught up with theatrics and yohan is known to be manipulative to get what he wants. His father also seems really held up with reputation and religion, telling jun to set him straight and what not. yohan also seems to get really sensitive when his father is brought up.
At least that's what I noticed. I'd say he probably does care for what his dad thinks. Whether he really loves him or it's cause of the control he has over him are two different things tho. If he wanted to manipulate jun he probably could have a while ago.

I'm confused, is it true that Yohan's family actually loves him or he's just pretending to manipulate Jun? and is what his sister told Jun true or she just made it up because she's jealous or hate Yohan?