Although biologically male, Luka has an extremely feminine appearance, which causes him much trouble (and gets him a lot of attention) from men (even Daru was attracted to Luka's appearance at one point). He is very slim, has thin arms and a lanky body. He wears a Miko, white robes and scarlet trouser-skirt. Luka is very sensitive and emotional. Even simple, sudden responses from Okabe can cause him to cry or tremble. He likes to wear girly clothing. He has violet eyes and short black hair