Kori grantz is a pure soul reaper. Younger sister of szayel grantz, they were separated at a young age. Kori learns of her brother and travels to hueco mundo to find him. In the process she also finds love. The 4th espada, Ulquiorra Cifer, catches her eye and it is love at first sight. The hole in his chest wasn't always there. Tragedy hits and all hope is lost. This is also a story about how szayel becomes a crazed scientist as he desperately searched for a way to save his innocent sister.