Err...don't know why I had Ryomi's vessel need to breath, especially when I said she only needs her heart and her brain. I'll need to fix that after our battle is done, but for this battle it could still be used against her. For future reference the vessel can survive just on the spirit energy, not eating or breathing. She can still eat and breath if she has the proper organs, but this is just for show or if she just likes the flavor because she'd still be able to get sensory information from the taste buds. As for breathing, it will probably just be a force of habit that the brain still automatically commands, and to not blow her cover of being a vessel if she's undercover.