Body-ko's Melancholy.A bath prior to retiring for the night sets the stage for a talk about Mariko's default technique for resolving her schoolwork -- a technique that requires an available external actor. For the frustrated Mariko, lashing out at Shintaro the next morning does nothing to help her against Sensei Tomada turning the tables unto her after he detects her academic subterfuge; refusing to acknowledge any culpability for her own sour fortunes, Mariko lashes out at Yuusuke before storming away...