
I understand what your saying but think about the background a little more being separated and treated differently from birth in the characters eyes are they really sister with that kind of upbringing, I think it is different from your personal experience due to the fact that they were forcibly taken apart plugging them into those roles which would cause these reaction. But I understand if I had a twin this would rub me wrong too I have 8+ siblings and one is a pair of twins if this ever happened to them or even me...it is just an unbelievable thought really to occur but is ever so slightly plausible

I know a friend who hates and is hated by his twin brother, his twin brother is a horrible persone (also his parents, they hate my friend because he is gay), his twin brother has been in drugs in the past and now he has not the life he wanted while my friend has a good job and a lovely partner, so his twin hates him more.
He cut communication with his twin and parents, but not with the rest of the family (most of his family accepted him), so sadly, he has to meet his twin in family reunions.
This manga is getting on my wrong side. I have a twin sister whom I love very much. She just had her spinal surgery a year ago. I really cried when she was able to walk again.
My twin is like a part of me. I couldn’t imagine treating my twin like this. If there is someonw who should understand the most, it would be your twin who was with you in your mother’s womb.
I get the author’s need to make the MC’s background story a tragedy. But this just rubs me in the wrong place.