Rei as a zashiki-warashi [座敷童子], a mischievous house spirit believed to bring fortune to the owner of the house.
（；¬＿¬).. somehow she looks more tsundere than mischievous…
Yōkai [妖怪] means monsters, spirits, demons. In Japanese manga/anime, it is common to see cute little boy/girl yōkai with animal ears. Naturally, we cannot miss the opportunity of dressing Kaoru into a cute foxy spirit. \(^0^)/
Kaoru can only sleep if the bedding materials are soft to touch. Especially before his musical competition or performance. He will even sleep naked and wrap himself with soft fur. Then he can be calmed and settled down to sleep.
“Most of us live in a world of mental abstraction, conceptualisation, and image making – a world of thought. We are immersed in a continuous stream of mental noise. It seems that we can’t stop thinking.”
~ Guardians of Being ~