After Tsugumi has a vision of a girl on an island, she and Hajime travel there and meet Mina Minato, who lives with her domineering and paranoid aunt, Fujie. Fujie refuses to let Mina live life away from their tiny island; in reality Fujie's psyche was broken after a traumatizing event and she is deranged. Mina's boyfriend Yuji was also attacked by Fujie for trying to escape to the mainland with Mina. After finding out that Fujie had killed her mother just to prevent her from leaving the island, and in danger of being the next to die, Mina sends her aunt to Hell in self defense.