Utsutsu is pondering ways to help her sister, Hikari, conquer her phobia of humans and leave her closet. She turns to Mu for advice, but his answer is the last thing Utsutsu expected. Then, the usually spirited Mu takes an unexpected turn for the morose. Kori tries everything she can think of but can’t restore his usual energetic nature. Who will help uncover the root of his malady?
