Roomate Korekiyo

Korekiyo is a tall, slim student with rather pale skin and long ocean green hair. His hair is stated to follow an archaic image of beauty and it "puts his female colleagues to shame". He has narrowed yellow eyes, and his mouth is covered by a sage green mask, covering his mouth and neck, with a zipper where his mouth would be, giving him a sinister and mysterious appearance. He wears the mask wherever he goes, no matter where he goes, and he even owns different masks for eating, showering, and other daily activities. When his mask is removed, it is revealed that he wears lipstick as the appearance of his tulpa that was based on his late sister. His appearance becomes more feminine where his chest gets slightly bigger, his eyebrows become thinner and he grows more eyelashes along with eyeshadow spontaneously appearing when his sister's persona is taking over.