Yamibito

Originally human, the Yamibito have mutated into a species that is compleatly at odds with modern science. Unlike the Shibito, the Yamibito exhibit extreme intelligence, and when defeated, are able to self-regenerate. Their habitual hatred for light has for some reason recently been replaced by a certain level of tolerance. The Yamibito are much more resilient, aggressive, and intelligent than the shibito, function essentially the same way. They are also repelled by light, meaning that they can be weakened by focusing a flashlight on them or turning on the lights in a room. Like the shibito, a yamibito can be defeated, but is revived when a yamirei re-enters the corpse. Eliminating the yamirei (which are also intolerant to light) renders the yamibito unconscious indefinitely. However, due to their improved intelligence and strength, yamibito will not fall for distractions that may have worked on shibito, and they are also much harder to defeat in combat.