People thought that Ema was an only child before she had met her new brothers, but they were wrong. Ema has an elder sister named Aki. As children Aki had saved Ema's life resulting her to slip into a coma. Thinking that her sister Aki had died, her and her father had left and had never talked about the horrible incident. Ema now living with thirteen brothers gets an unexpected visit from her sister who she thought was dead all these years. Will the brothers fall in love with Aki too now that she's moved in? Fined out.