For Hikaru, learning swordsmanship is far more interesting than thinking about marriage...and she won't let being the only daughter of a noble house in 10th-century Japan stand in her way! But one fateful day, Hikaru comes across a group of thieves who want revenge on her adored older brother Raikou for obliterating their village. Now Hikaru must sharpen her sword, as she is the only person who can prevent her brother's head from being served on a platter!