Reuniting with her stepbrother Kai after years apart, Akiho’s affectionate care soon turns into intense, forbidden longing. Their close-knit bond gives way to nights of passionate intimacy, as Akiho surrenders herself completely to Kai’s desires. With each encounter, their hidden romance deepens, blurring the lines between familial duty and undeniable carnal love, cementing a secret affair neither wishes to end.