RIKUO NURA ^^

Due to having yōkai blood in his lineage, Rikuo has two forms: one in which he takes a human form, and another where his yōkai blood takes over and he becomes a full yōkai. The former is frequently called his "Day" form, whereas the latter is called his "Night" form, as originally he was only able to maintain it during darkness. In human form, Rikuo appears as a teenage boy with brown eyes, except that his hair is brown within the top half and dark brown within the bottom half (Saori describes it as "reverse pudding"). Even though his eyesight is perfect, he always wears glasses. Often, he is seen in his school uniform worn over a red sweater with running shoes, especially in public. Otherwise, he wears only his red sweater and khaki pants instead of the black pants in his school uniform.Rikuo's yōkai blood normally awakens at night time, during which he undergoes a drastic transformation. In his yōkai form, Rikuo is significantly taller and older-looking, compared to his human form. His eyes narrow and turn red. His hair grows long, he loses his glasses and his voice deepens. His appearance resembles that of Nurarihyon and Rihan in that his hair is long and protrudes out the back of his head. Like Nurarihyon, the top half of his hair is white while the bottom half of his hair is black. Always, his yōkai form is seen with a blue cloak over a black kimono zōri. Midway through transforming into his yōkai form, Rikuo temporarily retains his human form's outfit. His hair grows longer and turns black and white, although not as long as his fully transformed form. He also appears taller than his human form, but still shorter than his full yōkai form.