Ayaka Nanase

Living in a ninja residence tucked away in a corner of a futuristic city is Rikka, the eldest daughter of a Ninja clan, who looks up to her father—a researcher—very much. Carrying on with her life normally, Rikka's home came suddenly under attack one day. Driven into a corner, what would she do to overcome this crisis? Rip darkness to pieces and become ""BLACK""!

Flum wasn't chosen for her strength-she has none. No magic, no skill, only an ability called "Reversal" that even she doesn't understand. So why did God place her in the hero's party? After being betrayed and sold into slavery, Flum is abused and eventually thrown to monsters for entertainment. Now faced with death, Flum must choose: be devoured or take up a cursed sword said to kill its wielder.