Rei and Arashi are high school students. They are childhood friends and are as close as brother and sister. Arashi has feelings for Rei, but he can't tell her that he likes her now. Rei is also dating Arashi's best friend, Yuu. Arashi is depressed that his childhood friend and best friend are having sex. However, Yuu confesses to him that he has broken up with Rei. A few days later, Rei and Arashi stand on the rooftop. What will become of their love... A bittersweet youthful AV about boys and girls who are clumsy at love. *This work is a re-edited version of "The girl I love is dating my precious best friend" (product number: bfd00005).