Ordinary high schooler Kimito Kagurazaka is abducted and enrolled at Seikain, an elite all-girls academy hidden in the mountains that keeps its noble students sealed off from the outside world. Too many graduates have floundered on contact with ordinary life, so the school plants a male commoner among them as a sample. Kimito only qualified because the staff decided he posed no romantic risk, and he plays along rather than face the alternative, meeting students like Aika Tenkuubashi, desperate for someone to notice her, and Reiko Arisugawa.