something tells me that the three of them (yuna, minji and minjae) are trapped in some hyeras other plan. in the chapter 31 she (hyera) said that the only thing that matters to her is herself, possibly she doesnt give a fvck about minjae. the author should do a chapter where we get more info about hyera's thoughts.
imo, minjae is really dumb. h00king up w/ hyera and then seducing yuna js because hyera wants to? isn't that so simple to understand that she doesn't wants you?