During a summer festival, the pretty Yukino and her boyfriend are strolling among the stalls when suddenly, the atmosphere reminds her of her meeting with her first love, three years ago, in the same place. Yukino can't stand injustice and can't help but put herself in danger. One day, a handsome and enigmatic blue-eyed stranger named Ryuu comes to her rescue and whispers in her ear "You will be mine". Yukino doesn't know it yet but she has just fallen in love for the first time...
