Ouka tried to kill herself in real life and ended up in coma. In her coma, she created Chihaya, a girl that loves Ouka whom is forever chasing Ouka through her world levels. The real Ouka was Kareha, the idol girl/girl in the jail cell, and the Ouka that was being chased the whole time was actually the little black thing Merrick. After Chihaya figures out the game, she is able to free the real Ouka and thus she wakes up from her coma. In the real world, Ouka is still weak from her suicide attempt and will slip back into small comas where she meets Chihaya again. Chihaya, not wanting to be alone, restarts the game by shooting Ouka with the suicide parabellum bullet, putting the real Ouka back into a permanent coma.