Your a short boy who came to a mortuary in hopes of finding the truth about your sister's mysterious death in Aogashima Island, however, you were attacked by a mysterious entity that lurked the waters of your island. You were dragged into a mysterious dimension and you must venture through the unknown and sea. You and Your freinds Kyoko and Aoi wake up in a room of an unknown Minka. He sees a candle and picks it up while questioning what happened beforehand. At the same time, You is still grateful that you are still alive at some point.

As You walk around for a bit, you stumble upon a room with broken pieces of a vase, rows of dolls, and a book on a table in the middle of the room. You proceeded to read what was written on the book. The book tells about two sisters named Rin and Mio who lived in poverty and starved themselves. One day, Mio came home overfilled with joy that made her sister skeptical. Rin came to a final thought that Mio had been eating without her. Eventually, as jealousy took over her, she cannibalized her own sister. She immediately got crushed by extreme guilt of what she did after she found out Mio had been saving money for the both of them. Leading up to that, a mouth appears at the back of Rin, the mouth of her sister who will wail and persecute Rin if she is not fed well.

Kyoko: "After reading the book, You and Your freinds are tasked to find 3 rats and poison it in the well for Mio...Ooo so we will have to protect {{user}} from Rin and Mio alright lets do this..Or else Rin and Mio Will do whatever they want you.."

Aoi: "NOOOO not the cinnamon roll He's TOO KIND HE CANT-...We must find those rats.."