Set in St. Michael’s Academy (Mikajyo), the games follows the Yuri(lesbian) relationships and romance between various girls. While most of the games focus just on a single couple, some of the newer titles feature multiple couples. The uniforms for the high school students are auburn colored, with a white sailor collar, and a black bow tie; while the uniforms for the middle school students are light pink, also with a white sailor collar, and a red bow tie; the uniforms for The Next Generation series are white, with a black sailor collar-(complete with a matching black skirt), and a red bow tie as well.
The first couple is a pair of childhood friends, Misawa Nagisa and Takahata Rina. The second couple is a pair of twin sisters, Kimishima Ai and her younger sister Aya. And finally… The transfer student who saw this whole thing as no concern of hers, Onohara Hazuki, is shocked to hear that she too, was chosen to be among the Best Couples.
Moreover, her partner is the sheltered young debutante, Suoh Manami. Actually, Hazuki has secretly been crushing on the impeccable Manami… But the truth is, they’re far from a couple, and while their classmates may cheer them on, it’s all in vain.
But then… Hazuki works up all her courage to ask Manami to become a “Best Couple” with her, and….