They are not even brothers or even step brothers, black hair seme just used some hypno or control everyone around uke just so he(uke) can't feel alone ╮(￣▽￣)╭ and according to black hair seme they have met when uke was still a child so he must be some kind of demon or God we dont know yet
They are not even brothers or even step brothers, black hair seme just used some hypno or control everyone around uke just so he(uke) can't feel alone ╮(￣▽￣)╭ and according to black hair seme they have met when uke was still a child so he must be some kind of demon or God we dont know yet