100% Safe Water Maru and Kiruko ask a local girl named Totori for directions to find clean water and leave their belongings with her. They enter an underground tunnel and are attacked by a monster. After Kiruko stops it, they discover the monster is actually a wild bear. While trapped up a concrete pylon, Maru and Kiruko realize that they need each other to survive. Kiruko eventually kills the bear with a shot from her Kiru-Beam gun. Later that evening, Kiruko tells Maru that she suspects that the people they have met are trying to exploit them. Totori attempts to have sex with Maru in another room, but when he touches her breast, he detects the heart of a Hiruko before he has to explain the embarrassing situation to Kiruko..