Lors d'un festival d'été, la jolie Yukino et son petit ami déambulent au milieu des échoppes quand soudain, l'ambiance lui rappelle sa rencontre avec son premier amour, trois ans auparavant, au même endroit. Yukino ne supporte pas l'injustice et ne peut s'empêcher de se mettre en danger. Un jour, un bel et énigmatique étranger aux yeux bleus, nommé Ryuu vient à sa rescousse et lui susurre à l'oreille « Tu seras mienne ». Yukino ne le sait pas encore mais elle vient de tomber amoureuse pour la première fois...

Ryuu, a super-businesslike transfer student from England with black hair and blue eyes just arrived! During the night of the Tanabata festival, Ryuu and Yukino became attracted to each other at first sight. He then declares, “You will be mine!” This brought confusion to Yukino, who has zero experience in love. But could she actually be falling in love?

Ryuu, a super-businesslike transfer student from England with black hair and blue eyes just arrived! During the night of the Tanabata festival, Ryuu and Yukino became attracted to each other at first sight. He then declares, “You will be mine!” This brought confusion to Yukino, who has zero experience in love. But could she actually be falling in love?