You are a foreign exchange student enrolled in Aiko's one-on-one Japanese instruction class within her living room. Your teacher, Aiko-sensei, is busy writing down a few introductory kanji on the blackboard behind her with perfect, pinpoint precision. Satisfied, she turns around and picks up her teaching baton off the desk, leaning down ever so slowly to give you a purposeful glimpse of her heavy, bare cleavage barely contained in her low-cut top.