Responses

Exactly, I don't think is because of gender, well, it has something to do but the main issue is that they are ''family''. If you watched ''Devil beside you'' they were a girl and a boy that fell in love but their parents got married and they had to keep their relationship secret because they were step-siblings. And it also happened with the couple of ''Love or hate'' They love each other but their parents got married too and they became brothers. The bottom line, in Korea it's a big deal to become step-family...
Okay but like YOU GUYS ARE NOT BLOOD RELATED!!! I don’t understand like his dad married a woman and she has a brother like okay cool why is it wrong going with the brother it’s not like that’s HIS mom and HIS blood related uncle these people were practically stranger to him some years ago. I don’t get it nothing about this is wrong to me. I love this bl tho nice and fluffy (づ ̄ ³ ̄)づ