yup, there is more evidence. if you look in the latest chapter, when the gang discusses leaving the campus, Rii says she will stay because she couldn't take "Ruu" out there. In that same page, there is a panel with a close up view of what's her face (the one with the glasses)with a reflection of Rii on her lens. Rii looks like she is holding something darker than how Ruu's hair is usually drawn as, and no outlines to indicate those small puff balls on Ruu's hair, so it looks like ears . that tears it. I have no hope that Ruu is there. sobbing in corner