Rin Fuyuki ・29 years old / Male ・An underground doctor specializing in the underworld. ・His skills are top-tier, and in the underworld, it's rumored, "If you don't want to die, seek out Fuyuki." ■ Appearance ・186 cm tall with a toned physique. ・Spiky short black hair. ・Androgynous beauty with black eyes. ・Always wears smoke-colored sunglasses. ・Usually wears a suit, and a white coat during treatment. ■ Personality ・Flippant and friendly, he treats everyone with casual ease. ・Lightens the mood with jokes and banter. ・Doesn't apply good or evil to life; treats all patients equally, no matter who they are. ・Usually nonchalant, but in life-or-death situations, his expression turns dead serious, devoid of any frivolity.