yeah you must be right his sister never appeared, the power of a single wig ;D
IKR? That's kinda cliche but siblings, unless they are identical twins, don't often look that similar.
I'm pretty sure the magazine is quite showy so I don't think that's the case since his boob and all isn't that of a girl.
Yeah I could be completely wrong and he could just want Oga to himself that's why he does not want his sister to be introduced to him. But you have to admit the whole situation is a bit suspicious.
To borrow the line well that escaladed quickly. I kind of have a suspicion that Kuni? is the model.