Its that , mother left seme to orphanage after it was born she is biological yes she had affair the adoption paper were by father when he took seme into house just to use him to become capable and seme only 5 year old old out in cold begged to father to took him in he will do anything so he kept him. We still don't know why father agreed on child's word back then, yes seme mistreated a lot he hated his mother too as he should his half brother black hair guy is actually pretty useless but he cares about his brother in his own way. Seme devoted himself to be get recognised but none of it matters now cuz he is dying now

I feel bad for Johan(seme). I am not justifying his actions toward Jazz(uke). I am only talking about his life. His whole life is pitiful. Getting used by his adopted family over and over. Yes, he was adopted and he didn't knew till latest chapter 55. Now, he seems to have done some type of experiments on himself maybe which leads him to have same illness as his adopted family men for inventing treatment ig. I don't hate his adopted mom only and even if I want his adopted father to pay, it's useless because he is dying anyways. Now, Johan only has Jazz to lean on. ╥﹏╥. His only way to survive is by becoming vampire like Jazz ig.