Kenichi, feeling down after being dumped by his girlfriend, comes home to find his aunt Mako there. The bath in their house is broken, so she's going to take care of him for a while. But right now, the shock of being dumped fills his mind. He leaves without much conversation and goes to take a bath, when Mako comes in unaware. Mako is surprised to see Kenichi crying, and washes his body to soothe him, which makes Kenichi get an erection. As an apology, she gives him a blowjob, and the two cross the line.