Midori finally spills the beans about her relationship with Mio. As it would turn out Midori is Mio’s imaginary friend. When Mio forgot about her she lost her shadow and knew that when Midori came back she would be the one to disappear.

Mio is disappearing from everyone’s memories, and Rikki seems to be powerless to stop it. What can he do to stop himself from forgetting about her?