Imouto, I agree with you. There should be a point where Nii-san turns into an actual girl because his power's as a heroine is becoming more and more prevelant as he notices all of those affection raise in just a glance now. Soon be a girl
Dfq is this, Antagonist literally abusing the plot armor to such extent that its almost as stupid as a main character in an average shounen abusing all this shit.