Kamen Rider Ryuki: Dawn of the Void

[The remake of Dragon Knight's Broken Mirror of Humanity, which has modified some of the plot and character settings, is not a cool novel, has no time travel, and has a single female protagonist] He just wants to be an ordinary boy. But fate pushed him into the killing battlefield behind the mirror - a survival game among Kamen Riders. Here, fighting is the only way to survive. When kindness becomes a luxury, and when ordinary becomes a luxury, can he fight his way to tomorrow in the cruel knight war? Without fighting, you cannot survive. But does fighting mean losing your original humanity?