Today's lesson is love!

Several decades have now passed since Japan began pushing aggressively for nationwide romantic reform in a bid to reverse declining birth rates and scale back its aging population demographic. Her efforts have paid off tremendously, with Japan having been transformed into a country where romance is now heralded as its very beating heart, and recent developments have even seen high schools introducing "Romance Courses" and curriculums! In a twist of fate, our protagonist, Ukyou Sagari, enrols at the prestigious Yurigarden Girls' School and — what luck! — ends up dating 4 girls simultaneously! Together they strive to rise above the rabble and top the Romance Course!