Rat.A young couple, Kenta and Machiko, moves into an old apartment for cheap, finishing moving the boxes into their new home. They realize they have an unwanted roommate: a rat. While Machiko is scared, Kenta claims that it's no worry and that they'll have to get used to them. That night as the couple sleeps, a rat bites Machiko on the finger, making her bleed. She hears squeaking coming from the walls, and wonders if they would be able to live with the rats. Some time later, after Machiko gets her wound treated; complete with a bandaged finger, Kenta goes out for two days on a business trip but not before placing a rat cage trap to calm down his worried girlfriend. But as soon as he leaves, Machiko hears squeaking, but she tries to convince herself that Kenta is right and that she'll get used to them. That night, she hears more squeaking, but again, tries to ignore them, despite her growing fear. As she sleeps, rats surround her bed... Two days later, Kenta returns and calls out to Machiko letting her know he's back. Machiko replies in a creepy voice, "Welcome home." A clawed hand opens the bedroom door and rats scurry out. Kenta screams in horror as a giant rat with a humanlike face and braided pigtails exits the threshold and says with a giggle and a toothy smile, "You were right, Ken-chan. They really grew on me."