changes through teh story

in a world where 90% of women have quirks and 5% of men have quirks in a system where females rule the males life only thouse with quirks can live normal lifes thouse without them are as slaves of slaves but when one quirkless boy awakens a power never seen before when his family abandons him only his sister cares for him what if this abandoning will awaken a powerful warrior of light and darknes do keep the balance he will travel do diffrent worlds and save them from theyr destruction all beware the power of the keyblade wielder

fun fact i may use some kingdom hearts worlds but il make up my own worlds also