My Twin Sister Kikiyo

Despite being an extremely capable, qualified, has enough knowledge to last a lifetime and not to mention athletic, Kikiyo the younger twin of her brother Kouta is quite the hand full. Whether is may drinking, smoking, partying you name is she is just one ball of wrecking force, who does whatever she wants whenever she wants but will that all change when she means this guy named Ryan at the boxing club? or will she be the same ? Who knows