"The Shadows" as their known, are an old species, who like to copy the shape of a living being, and them use this to mentally wear down that person. Horizon, is one of those people. "The Shadows" numbers are growing, at an alarming rate, as they preform a type of fragmentation, where if they've worn someone down enough, they have the power to split, and allow a new "Shadow" to form. Shadow horizon, is currently the only shadow, who is actively messing with anything, as a vast majority of the "Shadows" are now old, and weak, shadow horizon, being the last successful fragmentation (fragmentations from himself excluded), is now the leader of the shadows, it's believed that shadow horizon is holding off the new "Shadows" until he has enough to take over the entire world. However, "The Shadows" aren't the only mimicking species, "The Lights" exist too, however, instead of trying to wear down someone, "The Lights" directly oppose "The Shadows", and are the reason so many had grown old, and were unable to fragment. Problem is, "The Lights population is quickly declining, with only a few remaining, Light horizon, being one of them, Light Horizon, must do whatever it takes, to enable Horizon to beat Shadow Horizon, if Horizon is able to beat Shadow horizon, Several "Lights" will be formed. The lights are not perfect though, as they carelessly throw away a who their helping, if the deem it beneficial, or find a new person they like better, however, with their low numbers, this is unlikely, as new "hosts" are risky, and aren't always able to assist in the defeating of a "Shadow". Both species are effectively parasites, though, only the "Shadows" will admit to it.
Check back sometime, there will be some updates eventually, leading you on a hunt to defeat "The Shadows"
