Seito Kaichou de Amaenbou na Onee-chan wa Suki Desu ka?

Mio, the student council president, is also Yuuhi's childhood friend and neighbor. This closeness doesn't spare Yuuhi from the jealousy of classmates and other male students. But if they knew the truth about their time at home, the envy would be far fiercer. In reality, Mio and Yuuhi are lovers, and their formal demeanor at school is merely a facade to conceal their true intimacy.