The fact that this girl can literally spell out why this situation might be fucked up and afterwards the MC is just like "buuuuuuhhhh I wonder what she was trying to say?" is just bad writing, and so is MC's complete lack of knowledge of kouhai's romantic attraction. Oblivious MC is classic Japanese bad writing, but it's even worse when the MC is supposed to be an adult. Are we sure the MC is not an alien who does not understand human relationships? He's not a high school student, he is supposed to be an adult, but he acts likes a was born in a vat a few months ago. For the record, I don't have anything against any of the 3 main girls, but the MC being so dense is just irritating.
dropped.