友達

A fellow student of Rumi's, the two of them were walking home together when Rumi was abducted. She hurries to Rumi's home, where she divulges the details of the crime to a stunned protagonist, Miyabi and Yumika.

As the only witness to the crime, she gives the party their initial clues: a flyer announcing the opening of a new mahjong gaming hall that blew out the window of a red sports car, obviously foreign as the driver was seated on the left. She is sorry that she could not read the license plate number, without which the party has little else to start with but the advertisement.