Ginko

The Ginko, is a blind fish that lives within the darkness of the Tokoyami. It appears as a huge, glowing eel-like creature and is the initial cause of the Tokoyami inhabiting other living creatures. The Ginko's role is to devour various things and turns them into Tokoyami for which it can reside in and when it or the Tokoyami eat something, the energy from it gets released as a bright, powerful light. When someone sees the light projuced by the Ginko/Tokoyami, it brands them as prey and gives them the choice of being devoured by it entirely or becoming a host for it, if suitable. If the host becomes a host, the Ginko will consume one of the hosts eyes and leave a Tokoyami portal behind where the eye once was. It then becomes the hosts job to feed the Tokoyami, and in turn the Ginko, whatever they can so that more Tokoyami can be created. Then once enough is consumed, the Ginko will release more energy, which can be used by the host to empower themselves with more energy to use. This promotes a harmony between the host and the Ginko. The host feeds the Ginko/Tokoyami and in turn for providing a mobile living condition and food, the Ginko grants the host more energy and power.

The Ginko, once it enters a host, usually never leaves or surfaces until the host is about to die. When this happens, the Ginko/Tokoyami will find a dark place to reside until they can find a new host or means to travel to a better location.This is because the Ginko is weak when exposed to the light and if left within it for too long, will desolve and become a part of it. This is the reason as to why it lives within the Tokoyami, because no light can pierce it normally. However if the Ginko does surface, it will only during the darkest of nights and when it does it does so to feed or find a host. If without a host, the Tokoyami that the Ginko has already created will continue to feed off whatever they can, usually small organisms and when they do the Ginko will release the light as it normally does. If someone close by mostly avoids this phenomenon when it happens and see it from a far, they will be safe, however continuous exposure to it will start to affect a person, first by turning their eyes green and their hair white, then soon enough they will lose one eye to the Tokoyami, though will not gain the inhabitation of the Ginko, and lastly they will be completely devoured and turned into Tokoyami entirely.